diff --git a/docs/source/todo.md b/docs/source/todo.md
index 65d59ea1..ffa957dc 100644
--- a/docs/source/todo.md
+++ b/docs/source/todo.md
@@ -14,9 +14,9 @@ Planned feature additions
 - Add variable constraint GUI object positioning (add keyword arguments that are stored in the `.jmea` files)
 - Add error handling for over-constrained/Jax shape/no solution in GCS
 - Add an undo/redo framework to the GUI
-- Graphical highlighting of constraint parameters and constraints
+- Graphical highlighting of constraint parameters and constraints - make hoverEnter detection on constraint canvas items
+- Tie parameter hover to associated constraint hover events
 - Add unit selection ComboBox
-- Add renaming to parameters
 - Make the "Analysis" tab focused by default after an aerodynamics analysis (possibly implement a user option to
   override this behavior)
 - Write the XFOIL/MSES analysis code using the same `CPUBoundProcess` architecture used by optimization
@@ -40,6 +40,8 @@ Bug fixes
 - Remove wave/viscous drag from XFOIL drag history plots (optimization)
 - Fix symmetry constraint having switched target/tool points (perhaps automatically create the mirror point?)
 - Toggle grid affects all the dock widgets
+- Apply theme to status bar widgets immediately on theme change
+- Correct dimensions having default colors before switching themes
 
 Testing
 -------
diff --git a/pymead/core/gcs2.py b/pymead/core/gcs2.py
index a2ad7ae1..12b66995 100644
--- a/pymead/core/gcs2.py
+++ b/pymead/core/gcs2.py
@@ -248,10 +248,10 @@ def solve(self, source: GeoCon):
             d_angle = new_angle - old_angle
             rotation_point = source.p2
 
-            if edge_data_p21 and edge_data_p21["angle"] is source:
+            if edge_data_p21 and "angle" in edge_data_p21 and edge_data_p21["angle"] is source:
                 start = source.p1
                 # d_angle *= -1
-            elif edge_data_p23 and edge_data_p23["angle"] is source:
+            elif edge_data_p23 and "angle" in edge_data_p23 and edge_data_p23["angle"] is source:
                 start = source.p3
                 d_angle *= -1
             else:
@@ -279,9 +279,9 @@ def solve(self, source: GeoCon):
             d_angle = new_angle - old_angle
             rotation_point = source.vertex
 
-            if edge_data_p21 and edge_data_p21["angle"] is source:
+            if edge_data_p21 and "angle" in edge_data_p21 and edge_data_p21["angle"] is source:
                 pass
-            elif edge_data_p23 and edge_data_p23["angle"] is source:
+            elif edge_data_p23 and "angle" in edge_data_p23 and edge_data_p23["angle"] is source:
                 pass
                 d_angle *= -1
             else:
diff --git a/pymead/gui/airfoil_canvas.py b/pymead/gui/airfoil_canvas.py
index 298110ed..a572f51f 100644
--- a/pymead/gui/airfoil_canvas.py
+++ b/pymead/gui/airfoil_canvas.py
@@ -2,6 +2,7 @@
 import typing
 import sys
 from copy import deepcopy
+from functools import partial
 
 import numpy as np
 import pyqtgraph as pg
@@ -206,7 +207,7 @@ def addPymeadCanvasItem(self, pymead_obj: PymeadObj):
             pymead_obj.canvas_item.sigPolyExit.connect(self.airfoil_exited)
 
     @staticmethod
-    def runSelectionEventLoop(drawing_object: str, starting_message: str):
+    def runSelectionEventLoop(drawing_object: str, starting_message: str, enter_callback: typing.Callable = None):
         drawing_object = drawing_object
         starting_message = starting_message
 
@@ -215,7 +216,11 @@ def wrapped(self, *args, **kwargs):
                 self.drawing_object = drawing_object
                 self.sigStatusBarUpdate.emit(starting_message, 0)
                 loop = QEventLoop()
-                self.sigEnterPressed.connect(loop.quit)
+                connection = None
+                if enter_callback:
+                    connection = self.sigEnterPressed.connect(partial(enter_callback, self))
+                else:
+                    self.sigEnterPressed.connect(loop.quit)
                 self.sigEscapePressed.connect(loop.quit)
                 loop.exec()
                 # if len(self.geo_col.selected_objects["points"]) > 0:
@@ -226,6 +231,8 @@ def wrapped(self, *args, **kwargs):
                 #     self.clearSelectedObjects()
                 self.drawing_object = None
                 self.sigStatusBarUpdate.emit("", 0)
+                if enter_callback:
+                    self.sigEnterPressed.disconnect(connection)
             return wrapped
         return decorator
 
@@ -234,6 +241,18 @@ def wrapped(self, *args, **kwargs):
     def drawPoints(self):
         pass
 
+    def drawBezierNoEvent(self):
+        if len(self.geo_col.selected_objects["points"]) < 2:
+            msg = f"Choose at least 2 points to define a curve"
+            self.sigStatusBarUpdate.emit(msg, 2000)
+            return
+
+        point_sequence = PointSequence([pt for pt in self.geo_col.selected_objects["points"]])
+        self.geo_col.add_bezier(point_sequence=point_sequence)
+
+        self.clearSelectedObjects()
+        self.sigStatusBarUpdate.emit("Select the first Bezier control point of the next curve", 0)
+
     @runSelectionEventLoop(drawing_object="Bezier", starting_message="Select the first Bezier control point")
     def drawBezier(self):
         if len(self.geo_col.selected_objects["points"]) < 2:
@@ -244,6 +263,14 @@ def drawBezier(self):
         point_sequence = PointSequence([pt for pt in self.geo_col.selected_objects["points"]])
         self.geo_col.add_bezier(point_sequence=point_sequence)
 
+    @runSelectionEventLoop(drawing_object="Beziers", starting_message="Select the first Bezier control point",
+                           enter_callback=drawBezierNoEvent)
+    def drawBeziers(self):
+        if len(self.geo_col.selected_objects["points"]) < 2:
+            msg = f"Choose at least 2 points to define a curve"
+            self.sigStatusBarUpdate.emit(msg, 2000)
+            return
+
     @runSelectionEventLoop(drawing_object="LineSegment", starting_message="Select the first line endpoint")
     def drawLineSegment(self):
         if len(self.geo_col.selected_objects["points"]) < 2:
@@ -254,8 +281,12 @@ def drawLineSegment(self):
         point_sequence = PointSequence([pt for pt in self.geo_col.selected_objects["points"]])
         self.geo_col.add_line(point_sequence=point_sequence)
 
+    @runSelectionEventLoop(drawing_object="LineSegments", starting_message="Select the first line endpoint")
     def drawLines(self):
-        self.drawLineSegment()
+        if len(self.geo_col.selected_objects["points"]) < 2:
+            msg = f"Choose at least 2 points to define a curve"
+            self.sigStatusBarUpdate.emit(msg, 2000)
+            return
 
     @runSelectionEventLoop(drawing_object="Airfoil", starting_message="Select the leading edge point")
     def generateAirfoil(self):
@@ -263,6 +294,7 @@ def generateAirfoil(self):
             self.sigStatusBarUpdate.emit(
                 "Choose either 2 points (sharp trailing edge) or 4 points (blunt trailing edge)"
                 " to generate an airfoil", 4000)
+            return
 
         le = self.geo_col.selected_objects["points"][0]
         te = self.geo_col.selected_objects["points"][1]
@@ -291,6 +323,7 @@ def addLengthDimension(self):
             self.sigStatusBarUpdate.emit("Choose either 2 points (no length parameter) or 3 points "
                                          "(specified length parameter)"
                                          " to add a length dimension", 4000)
+            return
 
         tool_point = self.geo_col.selected_objects["points"][0]
         target_point = self.geo_col.selected_objects["points"][1]
@@ -302,6 +335,7 @@ def addLengthDimension(self):
     def addDistanceConstraint(self):
         if len(self.geo_col.selected_objects["points"]) != 2:
             self.sigStatusBarUpdate.emit("Choose exactly two points to define a distance constraint", 4000)
+            return
 
         # p1 = self.geo_col.selected_objects["points"][0]
         # p2 = self.geo_col.selected_objects["points"][1]
@@ -321,6 +355,7 @@ def addAngleDimension(self):
             self.sigStatusBarUpdate.emit("Choose either 2 points (no angle parameter) or 3 points "
                                          "(specified angle parameter)"
                                          " to add an angle dimension", 4000)
+            return
         tool_point = self.geo_col.selected_objects["points"][0]
         target_point = self.geo_col.selected_objects["points"][1]
         angle_param = None if len(self.geo_col.selected_objects["points"]) <= 2 else self.geo_col.selected_objects["points"][2]
@@ -424,14 +459,35 @@ def pointClicked(self, scatter_item, spot, ev, point_item):
             self.geo_col.select_object(point_item.point)
             n_ctrl_pts = len(self.geo_col.selected_objects["points"])
             degree = n_ctrl_pts - 1
-            msg = (f"Added control point to curve. Number of control points: {len(self.geo_col.selected_objects['points'])} "
+            msg = (f"Added control point to curve. Number of control points: "
+                   f"{len(self.geo_col.selected_objects['points'])} "
+                   f"(degree: {degree}). Press 'Enter' to generate the curve.")
+            self.sigStatusBarUpdate.emit(msg, 0)
+        elif self.drawing_object == "Beziers":
+            self.geo_col.select_object(point_item.point)
+            n_ctrl_pts = len(self.geo_col.selected_objects["points"])
+            degree = n_ctrl_pts - 1
+            msg = (f"Added control point to curve. Number of control points: "
+                   f"{len(self.geo_col.selected_objects['points'])} "
                    f"(degree: {degree}). Press 'Enter' to generate the curve.")
             self.sigStatusBarUpdate.emit(msg, 0)
         elif self.drawing_object == "LineSegment":
             if len(self.geo_col.selected_objects["points"]) < 2:
                 self.geo_col.select_object(point_item.point)
+            if len(self.geo_col.selected_objects["points"]) == 1:
+                self.sigStatusBarUpdate.emit("Next, choose the line's endpoint", 0)
             if len(self.geo_col.selected_objects["points"]) == 2:
                 self.sigEnterPressed.emit()  # Complete the line after selecting the second point
+        elif self.drawing_object == "LineSegments":
+            if len(self.geo_col.selected_objects["points"]) < 2:
+                self.geo_col.select_object(point_item.point)
+            if len(self.geo_col.selected_objects["points"]) == 1:
+                self.sigStatusBarUpdate.emit("Next, choose the line's endpoint", 0)
+            if len(self.geo_col.selected_objects["points"]) == 2:
+                point_sequence = PointSequence([pt for pt in self.geo_col.selected_objects["points"]])
+                self.geo_col.add_line(point_sequence=point_sequence)
+                self.clearSelectedObjects()
+                self.sigStatusBarUpdate.emit("Choose the next line's start point", 0)
         elif self.adding_point_to_curve is not None:
             if len(self.geo_col.selected_objects["points"]) < 2:
                 self.geo_col.select_object(point_item.point)
diff --git a/pymead/gui/gui.py b/pymead/gui/gui.py
index 6f49bedd..ba07f4e0 100644
--- a/pymead/gui/gui.py
+++ b/pymead/gui/gui.py
@@ -459,6 +459,14 @@ def set_theme(self, theme_name: str):
         for cnstr in self.geo_col.container()["geocon"].values():
             cnstr.canvas_item.setStyle(theme)
 
+        for button_name, button_setting in self.main_icon_toolbar.button_settings.items():
+            icon_name = button_setting["icon"]
+            if "dark" not in icon_name:
+                continue
+
+            image_path = os.path.join(ICON_DIR, icon_name.replace("dark", theme_name))
+            self.main_icon_toolbar.buttons[button_name]["button"].setIcon(QIcon(image_path))
+
     def set_color_bar_style(self, new_values: dict = None):
         if self.cbar is None:
             return
diff --git a/pymead/gui/gui_settings/buttons.json b/pymead/gui/gui_settings/buttons.json
index 5f4157cf..96f411a8 100644
--- a/pymead/gui/gui_settings/buttons.json
+++ b/pymead/gui/gui_settings/buttons.json
@@ -13,17 +13,59 @@
     "function": "change_background_color_button_toggled"
   },
   "draw-point": {
-    "icon": "point.svg",
+    "icon": "point_dark.svg",
     "status_tip": "Draw points",
     "checkable": false,
     "function": "on_draw_points_pressed"
   },
   "draw-line": {
-    "icon": "line.svg",
+    "icon": "line_dark.svg",
     "status_tip": "Draw lines",
     "checkable": false,
     "function": "on_draw_lines_pressed"
   },
+  "draw-bezier": {
+    "icon": "bezier_dark.svg",
+    "status_tip": "Draw Bezier curves",
+    "checkable": false,
+    "function": "on_draw_bezier_pressed"
+  },
+  "add-distance-constraint": {
+    "icon": "distance_constraint_dark.svg",
+    "status_tip": "Add a distance constraint",
+    "checkable": false,
+    "function": "on_add_distance_constraint_pressed"
+  },
+  "add-rel-angle-constraint": {
+    "icon": "rel_angle_constraint_dark.svg",
+    "status_tip": "Add a relative angle constraint",
+    "checkable": false,
+    "function": "on_add_rel_angle_constraint_pressed"
+  },
+  "add-perp-constraint": {
+    "icon": "perp3_constraint_dark.svg",
+    "status_tip": "Add a perpendicular constraint",
+    "checkable": false,
+    "function": "on_add_perp_constraint_pressed"
+  },
+  "add-anti-parallel-constraint": {
+    "icon": "anti_parallel_constraint_dark.svg",
+    "status_tip": "Add an anti-parallel constraint",
+    "checkable": false,
+    "function": "on_add_anti_parallel_constraint_pressed"
+  },
+  "add-symmetry-constraint": {
+    "icon": "symmetry_constraint_dark.svg",
+    "status_tip": "Add a symmetry constraint",
+    "checkable": false,
+    "function": "on_add_symmetry_constraint_pressed"
+  },
+  "add-roc-constraint": {
+    "icon": "roc_constraint_dark.svg",
+    "status_tip": "Add a radius of curvature constraint",
+    "checkable": false,
+    "function": "on_add_roc_constraint_pressed"
+  },
   "stop-optimization": {
     "icon": "stop.png",
     "status_tip": "Terminate optimization",
diff --git a/pymead/gui/main_icon_toolbar.py b/pymead/gui/main_icon_toolbar.py
index 1c5d28bc..a5aebb3d 100644
--- a/pymead/gui/main_icon_toolbar.py
+++ b/pymead/gui/main_icon_toolbar.py
@@ -81,5 +81,26 @@ def on_draw_points_pressed(self):
     def on_draw_lines_pressed(self):
         self.parent.airfoil_canvas.drawLines()
 
+    def on_draw_bezier_pressed(self):
+        self.parent.airfoil_canvas.drawBeziers()
+
+    def on_add_distance_constraint_pressed(self):
+        self.parent.airfoil_canvas.addDistanceConstraint()
+
+    def on_add_rel_angle_constraint_pressed(self):
+        self.parent.airfoil_canvas.addRelAngle3Constraint()
+
+    def on_add_perp_constraint_pressed(self):
+        self.parent.airfoil_canvas.addPerp3Constraint()
+
+    def on_add_anti_parallel_constraint_pressed(self):
+        self.parent.airfoil_canvas.addAntiParallel3Constraint()
+
+    def on_add_symmetry_constraint_pressed(self):
+        self.parent.airfoil_canvas.addSymmetryConstraint()
+
+    def on_add_roc_constraint_pressed(self):
+        self.parent.airfoil_canvas.addROCurvatureConstraint()
+
     def on_help_button_pressed(self):
         self.parent.show_help()
diff --git a/pymead/icons/anti_parallel_constraint_dark.svg b/pymead/icons/anti_parallel_constraint_dark.svg
new file mode 100644
index 00000000..38237dff
--- /dev/null
+++ b/pymead/icons/anti_parallel_constraint_dark.svg
@@ -0,0 +1 @@
+<svg version="1.1" viewBox="0.0 0.0 256.0 256.0" fill="none" stroke="none" stroke-linecap="square" stroke-miterlimit="10" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><clipPath id="p.0"><path d="m0 0l256.0 0l0 256.0l-256.0 0l0 -256.0z" clip-rule="nonzero"/></clipPath><g clip-path="url(#p.0)"><path fill="#000000" fill-opacity="0.0" d="m0 0l256.0 0l0 256.0l-256.0 0z" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m29.71699 32.894928l196.56693 197.22835" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m29.71699 32.894928l196.56693 197.22835" fill-rule="evenodd"/><path fill="#68f4f7" d="m12.385827 32.131233l0 0c0 -9.280123 7.5230265 -16.80315 16.80315 -16.80315l0 0c4.4564743 0 8.730419 1.7703276 11.881622 4.921529c3.1511993 3.1512012 4.921528 7.425148 4.921528 11.88162l0 0c0 9.280125 -7.5230255 16.80315 -16.80315 16.80315l0 0c-9.280123 0 -16.80315 -7.5230255 -16.80315 -16.80315z" fill-rule="evenodd"/><path stroke="#999999" stroke-width="1.0" stroke-linejoin="round" stroke-linecap="butt" d="m12.385827 32.131233l0 0c0 -9.280123 7.5230265 -16.80315 16.80315 -16.80315l0 0c4.4564743 0 8.730419 1.7703276 11.881622 4.921529c3.1511993 3.1512012 4.921528 7.425148 4.921528 11.88162l0 0c0 9.280125 -7.5230255 16.80315 -16.80315 16.80315l0 0c-9.280123 0 -16.80315 -7.5230255 -16.80315 -16.80315z" fill-rule="evenodd"/><path fill="#68f4f7" d="m104.64042 124.727036l0 0c0 -9.2801285 7.5230255 -16.803154 16.803154 -16.803154l0 0c4.4564667 0 8.730423 1.7703323 11.881622 4.9215317c3.1511993 3.1511993 4.921524 7.425148 4.921524 11.881622l0 0c0 9.280121 -7.5230255 16.803146 -16.803146 16.803146l0 0c-9.2801285 0 -16.803154 -7.5230255 -16.803154 -16.803146z" fill-rule="evenodd"/><path stroke="#999999" stroke-width="1.0" stroke-linejoin="round" stroke-linecap="butt" d="m104.64042 124.727036l0 0c0 -9.2801285 7.5230255 -16.803154 16.803154 -16.803154l0 0c4.4564667 0 8.730423 1.7703323 11.881622 4.9215317c3.1511993 3.1511993 4.921524 7.425148 4.921524 11.881622l0 0c0 9.280121 -7.5230255 16.803146 -16.803146 16.803146l0 0c-9.2801285 0 -16.803154 -7.5230255 -16.803154 -16.803146z" fill-rule="evenodd"/><path fill="#68f4f7" d="m208.46982 228.89502l0 0c0 -9.280136 7.5230255 -16.803162 16.803146 -16.803162l0 0c4.4564667 0 8.730423 1.77034 11.881622 4.9215393c3.1511993 3.1511993 4.921524 7.4251404 4.921524 11.881622l0 0c0 9.280121 -7.5230255 16.803146 -16.803146 16.803146l0 0c-9.280121 0 -16.803146 -7.5230255 -16.803146 -16.803146z" fill-rule="evenodd"/><path stroke="#999999" stroke-width="1.0" stroke-linejoin="round" stroke-linecap="butt" d="m208.46982 228.89502l0 0c0 -9.280136 7.5230255 -16.803162 16.803146 -16.803162l0 0c4.4564667 0 8.730423 1.77034 11.881622 4.9215393c3.1511993 3.1511993 4.921524 7.4251404 4.921524 11.881622l0 0c0 9.280121 -7.5230255 16.803146 -16.803146 16.803146l0 0c-9.280121 0 -16.803146 -7.5230255 -16.803146 -16.803146z" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m92.249344 63.66142l-43.874016 22.204723" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m92.249344 63.66142l-43.874016 22.204723" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m108.249344 79.661415l-43.874016 22.204727" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m108.249344 79.661415l-43.874016 22.204727" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m180.41995 155.23622l-43.874023 22.204727" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m180.41995 155.23622l-43.874023 22.204727" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m196.41995 171.23622l-43.874023 22.204727" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m196.41995 171.23622l-43.874023 22.204727" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m143.3202 -25.740158l120.157486 0l0 180.97638l-120.157486 0z" fill-rule="evenodd"/><path fill="#68f4f7" d="m162.99208 111.25984l0 -95.4375l12.640625 0l0 39.1875l49.59375 0l0 -39.1875l12.640625 0l0 95.4375l-12.640625 0l0 -44.984375l-49.59375 0l0 44.984375l-12.640625 0z" fill-rule="nonzero"/></g></svg>
\ No newline at end of file
diff --git a/pymead/icons/anti_parallel_constraint_light.svg b/pymead/icons/anti_parallel_constraint_light.svg
new file mode 100644
index 00000000..26852ffc
--- /dev/null
+++ b/pymead/icons/anti_parallel_constraint_light.svg
@@ -0,0 +1 @@
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diff --git a/pymead/icons/bezier_dark.svg b/pymead/icons/bezier_dark.svg
new file mode 100644
index 00000000..f9a9057d
--- /dev/null
+++ b/pymead/icons/bezier_dark.svg
@@ -0,0 +1 @@
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diff --git a/pymead/icons/bezier_light.svg b/pymead/icons/bezier_light.svg
new file mode 100644
index 00000000..140af7e6
--- /dev/null
+++ b/pymead/icons/bezier_light.svg
@@ -0,0 +1 @@
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diff --git a/pymead/icons/distance_constraint_dark.svg b/pymead/icons/distance_constraint_dark.svg
new file mode 100644
index 00000000..6be7a0e9
--- /dev/null
+++ b/pymead/icons/distance_constraint_dark.svg
@@ -0,0 +1 @@
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diff --git a/pymead/icons/distance_constraint_light.svg b/pymead/icons/distance_constraint_light.svg
new file mode 100644
index 00000000..95051f51
--- /dev/null
+++ b/pymead/icons/distance_constraint_light.svg
@@ -0,0 +1 @@
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diff --git a/pymead/icons/line.svg b/pymead/icons/line.svg
deleted file mode 100644
index 37a4a6e1..00000000
--- a/pymead/icons/line.svg
+++ /dev/null
@@ -1 +0,0 @@
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diff --git a/pymead/icons/line_dark.svg b/pymead/icons/line_dark.svg
new file mode 100644
index 00000000..6eb89f6e
--- /dev/null
+++ b/pymead/icons/line_dark.svg
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/pymead/icons/line_light.svg b/pymead/icons/line_light.svg
new file mode 100644
index 00000000..3513d62c
--- /dev/null
+++ b/pymead/icons/line_light.svg
@@ -0,0 +1 @@
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\ No newline at end of file
diff --git a/pymead/icons/perp3_constraint_dark.svg b/pymead/icons/perp3_constraint_dark.svg
new file mode 100644
index 00000000..a2672cff
--- /dev/null
+++ b/pymead/icons/perp3_constraint_dark.svg
@@ -0,0 +1 @@
+<svg version="1.1" viewBox="0.0 0.0 256.0 256.0" fill="none" stroke="none" stroke-linecap="square" stroke-miterlimit="10" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><clipPath id="p.0"><path d="m0 0l256.0 0l0 256.0l-256.0 0l0 -256.0z" clip-rule="nonzero"/></clipPath><g clip-path="url(#p.0)"><path fill="#000000" fill-opacity="0.0" d="m0 0l256.0 0l0 256.0l-256.0 0z" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m24.51181 24.850393l0 206.979l206.97638 0" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m24.51181 24.850393l0 206.979l206.97638 0" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m72.509636 231.83046l0 -47.998444l-47.997826 0" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m72.509636 231.83046l0 -47.998444l-47.997826 0" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m149.1076 -26.551182l118.80316 0l0 180.97638l-118.80316 0z" fill-rule="evenodd"/><path fill="#68f4f7" d="m192.6701 110.44882l0 -84.171875l-31.4375 0l0 -11.265624l75.640625 0l0 11.265624l-31.5625 0l0 84.171875l-12.640625 0z" fill-rule="nonzero"/></g></svg>
\ No newline at end of file
diff --git a/pymead/icons/perp3_constraint_light.svg b/pymead/icons/perp3_constraint_light.svg
new file mode 100644
index 00000000..75995923
--- /dev/null
+++ b/pymead/icons/perp3_constraint_light.svg
@@ -0,0 +1 @@
+<svg version="1.1" viewBox="0.0 0.0 256.0 256.0" fill="none" stroke="none" stroke-linecap="square" stroke-miterlimit="10" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><clipPath id="p.0"><path d="m0 0l256.0 0l0 256.0l-256.0 0l0 -256.0z" clip-rule="nonzero"/></clipPath><g clip-path="url(#p.0)"><path fill="#000000" fill-opacity="0.0" d="m0 0l256.0 0l0 256.0l-256.0 0z" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m24.51181 24.850393l0 206.979l206.97638 0" fill-rule="evenodd"/><path stroke="#1c75bc" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m24.51181 24.850393l0 206.979l206.97638 0" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m72.509636 231.83046l0 -47.998444l-47.997826 0" fill-rule="evenodd"/><path stroke="#1c75bc" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m72.509636 231.83046l0 -47.998444l-47.997826 0" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m149.1076 -26.551182l118.80316 0l0 180.97638l-118.80316 0z" fill-rule="evenodd"/><path fill="#1c75bc" d="m192.6701 110.44882l0 -84.171875l-31.4375 0l0 -11.265624l75.640625 0l0 11.265624l-31.5625 0l0 84.171875l-12.640625 0z" fill-rule="nonzero"/></g></svg>
\ No newline at end of file
diff --git a/pymead/icons/point.svg b/pymead/icons/point_dark.svg
similarity index 92%
rename from pymead/icons/point.svg
rename to pymead/icons/point_dark.svg
index 936f190a..572ec0ed 100644
--- a/pymead/icons/point.svg
+++ b/pymead/icons/point_dark.svg
@@ -1 +1 @@
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\ No newline at end of file
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\ No newline at end of file
diff --git a/pymead/icons/point_light.svg b/pymead/icons/point_light.svg
new file mode 100644
index 00000000..48794e23
--- /dev/null
+++ b/pymead/icons/point_light.svg
@@ -0,0 +1 @@
+<svg version="1.1" viewBox="0.0 0.0 256.0 256.0" fill="none" stroke="none" stroke-linecap="square" stroke-miterlimit="10" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><clipPath id="p.0"><path d="m0 0l256.0 0l0 256.0l-256.0 0l0 -256.0z" clip-rule="nonzero"/></clipPath><g clip-path="url(#p.0)"><path fill="#000000" fill-opacity="0.0" d="m0 0l256.0 0l0 256.0l-256.0 0z" fill-rule="evenodd"/><path fill="#1c75bc" d="m11.5958 166.14961l0 0c0 -39.76451 32.235497 -72.00001 72.0 -72.00001l0 0c19.095589 0 37.409065 7.5856934 50.91169 21.08831c13.502609 13.5026245 21.088303 31.816101 21.088303 50.911697l0 0c0 39.764496 -32.23549 72.0 -71.99999 72.0l0 0c-39.764503 0 -72.0 -32.235504 -72.0 -72.0z" fill-rule="evenodd"/><path stroke="#999999" stroke-width="4.0" stroke-linejoin="round" stroke-linecap="butt" d="m11.5958 166.14961l0 0c0 -39.76451 32.235497 -72.00001 72.0 -72.00001l0 0c19.095589 0 37.409065 7.5856934 50.91169 21.08831c13.502609 13.5026245 21.088303 31.816101 21.088303 50.911697l0 0c0 39.764496 -32.23549 72.0 -71.99999 72.0l0 0c-39.764503 0 -72.0 -32.235504 -72.0 -72.0z" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m149.79527 -26.677166l116.88188 0l0 130.3307l-116.88188 0z" fill-rule="evenodd"/><path fill="#1c75bc" d="m169.07652 110.32284l0 -95.4375l36.0 0q9.515625 0 14.53125 0.90625q7.015625 1.171874 11.765625 4.468749q4.765625 3.28125 7.65625 9.203125q2.90625 5.921875 2.90625 13.03125q0 12.171875 -7.75 20.609375q-7.75 8.421879 -28.0 8.421879l-24.46875 0l0 38.796875l-12.640625 0zm12.640625 -50.062504l24.671875 0q12.234375 0 17.375 -4.546875q5.140625 -4.5625 5.140625 -12.828125q0 -6.0 -3.03125 -10.265625q-3.015625 -4.265625 -7.96875 -5.625q-3.1875 -0.84375 -11.78125 -0.84375l-24.40625 0l0 34.109375z" fill-rule="nonzero"/></g></svg>
\ No newline at end of file
diff --git a/pymead/icons/rel_angle_constraint_dark.svg b/pymead/icons/rel_angle_constraint_dark.svg
new file mode 100644
index 00000000..f537fed0
--- /dev/null
+++ b/pymead/icons/rel_angle_constraint_dark.svg
@@ -0,0 +1 @@
+<svg version="1.1" viewBox="0.0 0.0 256.0 256.0" fill="none" stroke="none" stroke-linecap="square" stroke-miterlimit="10" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns="http://www.w3.org/2000/svg"><clipPath id="p.0"><path d="m0 0l256.0 0l0 256.0l-256.0 0l0 -256.0z" clip-rule="nonzero"/></clipPath><g clip-path="url(#p.0)"><path fill="#000000" fill-opacity="0.0" d="m0 0l256.0 0l0 256.0l-256.0 0z" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m26.415222 32.157715l65.1147 141.29453l123.0789 50.38974" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" stroke-dasharray="48.0,36.0" d="m26.415222 32.157715l65.1147 141.29453l123.0789 50.38974" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m69.90032 125.82417l0 0c16.732178 -3.8448944 34.172707 1.4577408 46.411934 14.11113c12.239227 12.653397 17.636612 30.961487 14.363281 48.720657l-49.959 -10.280624z" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m69.90032 125.82417l0 0c16.732178 -3.8448944 34.172707 1.4577408 46.411934 14.11113c12.239227 12.653397 17.636612 30.961487 14.363281 48.720657" fill-rule="evenodd"/><path stroke="#68f4f7" stroke-width="12.0" stroke-linejoin="round" stroke-linecap="butt" d="m69.90032 125.82417l0 0c16.732178 -3.8448944 34.172707 1.4577408 46.411934 14.11113c12.239227 12.653397 17.636612 30.961487 14.363281 48.720657" fill-rule="evenodd"/><path fill="#000000" fill-opacity="0.0" d="m140.59317 -24.52231l121.543304 0l0 140.94489l-121.543304 0z" fill-rule="evenodd"/><path fill="#68f4f7" d="m149.40567 112.47769l36.640625 -95.4375l13.609375 0l39.0625 95.4375l-14.390625 0l-11.125 -28.90625l-39.90625 0l-10.484375 28.90625l-13.40625 0zm27.53125 -39.1875l32.359375 0l-9.96875 -26.4375q-4.546875 -12.046875 -6.765625 -19.781252q-1.828125 9.171877 -5.140625 18.218752l-10.484375 28.0z" fill-rule="nonzero"/></g></svg>
\ No newline at end of file
diff --git a/pymead/icons/rel_angle_constraint_light.svg b/pymead/icons/rel_angle_constraint_light.svg
new file mode 100644
index 00000000..b8315a53
--- /dev/null
+++ b/pymead/icons/rel_angle_constraint_light.svg
@@ -0,0 +1 @@
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diff --git a/pymead/icons/roc_constraint_dark.svg b/pymead/icons/roc_constraint_dark.svg
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diff --git a/pymead/icons/roc_constraint_light.svg b/pymead/icons/roc_constraint_light.svg
new file mode 100644
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diff --git a/pymead/icons/symmetry_constraint.drawio.png b/pymead/icons/symmetry_constraint.drawio.png
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diff --git a/pymead/icons/symmetry_constraint_dark.svg b/pymead/icons/symmetry_constraint_dark.svg
new file mode 100644
index 00000000..27ade121
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diff --git a/pymead/icons/symmetry_constraint_light.svg b/pymead/icons/symmetry_constraint_light.svg
new file mode 100644
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