diff --git a/.idea/misc.xml b/.idea/misc.xml
index c452c65..7b6b661 100644
--- a/.idea/misc.xml
+++ b/.idea/misc.xml
@@ -24,7 +24,7 @@
       </value>
     </option>
   </component>
-  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_8" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
+  <component name="ProjectRootManager" version="2" languageLevel="JDK_1_7" default="true" project-jdk-name="1.8" project-jdk-type="JavaSDK">
     <output url="file://$PROJECT_DIR$/build/classes" />
   </component>
   <component name="ProjectType">
diff --git a/jsonthemer/build.gradle b/jsonthemer/build.gradle
index b3d0324..fe92ed0 100644
--- a/jsonthemer/build.gradle
+++ b/jsonthemer/build.gradle
@@ -28,8 +28,8 @@ android {
 dependencies {
     implementation fileTree(dir: 'libs', include: ['*.jar'])
 
-    implementation 'com.android.support:appcompat-v7:26.1.0'
-    implementation 'com.android.support:design:26.1.0'
+    implementation 'com.android.support:appcompat-v7:26.0.1'
+    implementation 'com.android.support:design:26.0.1'
     implementation 'com.google.code.gson:gson:2.8.2'
 
     testImplementation 'junit:junit:4.12'
diff --git a/sample/build.gradle b/sample/build.gradle
index 610ebdb..418b4e0 100644
--- a/sample/build.gradle
+++ b/sample/build.gradle
@@ -31,8 +31,8 @@ dependencies {
 
     implementation project(path: ':jsonthemer')
 
-    implementation 'com.android.support:appcompat-v7:26.1.0'
-    implementation 'com.android.support:design:26.1.0'
+    implementation 'com.android.support:appcompat-v7:26.0.1'
+    implementation 'com.android.support:design:26.0.1'
     implementation 'com.google.code.gson:gson:2.8.2'
 
     // Kotlin
diff --git a/sample/src/main/assets/blue_theme.json b/sample/src/main/assets/blue_theme.json
index 267c60c..5737e60 100644
--- a/sample/src/main/assets/blue_theme.json
+++ b/sample/src/main/assets/blue_theme.json
@@ -3,8 +3,8 @@
   "toolbarThemeOverlay": 1,
   "popupThemeOverlay": 0,
   "statusBarColor": "#303F9F",
-  "toolbarColor": "#3F51B5",
+  "toolbarColor": "#C83F51B5",
   "accentColor": "#448AFF",
-  "navigationBarColor": "#303F9F",
+  "navigationBarColor": "#C8303F9F",
   "backgroundColor": "#FFFFFFFF"
 }
\ No newline at end of file
diff --git a/sample/src/main/assets/green_theme.json b/sample/src/main/assets/green_theme.json
index 58e2b59..dff81c6 100644
--- a/sample/src/main/assets/green_theme.json
+++ b/sample/src/main/assets/green_theme.json
@@ -3,8 +3,8 @@
   "toolbarThemeOverlay": 0,
   "popupThemeOverlay": 1,
   "statusBarColor": "#388E3C",
-  "toolbarColor": "#4CAF50",
+  "toolbarColor": "#C84CAF50",
   "accentColor": "#8BC34A",
-  "navigationBarColor": "#388E3C",
+  "navigationBarColor": "#C8388E3C",
   "backgroundColor": "#FF000000"
 }
\ No newline at end of file
diff --git a/sample/src/main/assets/lime_theme.json b/sample/src/main/assets/lime_theme.json
index 72ea53a..f54d69b 100644
--- a/sample/src/main/assets/lime_theme.json
+++ b/sample/src/main/assets/lime_theme.json
@@ -3,8 +3,8 @@
   "toolbarThemeOverlay": 0,
   "popupThemeOverlay": 1,
   "statusBarColor": "#00796B",
-  "toolbarColor": "#009688",
+  "toolbarColor": "#C8009688",
   "accentColor": "#CDDC39",
-  "navigationBarColor": "#00796B",
+  "navigationBarColor": "#C800796B",
   "backgroundColor": "#FF000000"
 }
\ No newline at end of file
diff --git a/sample/src/main/assets/red_theme.json b/sample/src/main/assets/red_theme.json
index 55bef95..b9ae564 100644
--- a/sample/src/main/assets/red_theme.json
+++ b/sample/src/main/assets/red_theme.json
@@ -3,8 +3,8 @@
   "toolbarThemeOverlay": 1,
   "popupThemeOverlay": 0,
   "statusBarColor": "#D32F2F",
-  "toolbarColor": "#F44336",
+  "toolbarColor": "#C8F44336",
   "accentColor": "#FF9800",
-  "navigationBarColor": "#D32F2F",
+  "navigationBarColor": "#C8D32F2F",
   "backgroundColor": "#FFFFFFFF"
 }
\ No newline at end of file
diff --git a/sample/src/main/java/com/sample/jsonthemer/MainActivity.kt b/sample/src/main/java/com/sample/jsonthemer/MainActivity.kt
index a797dde..2c711ae 100644
--- a/sample/src/main/java/com/sample/jsonthemer/MainActivity.kt
+++ b/sample/src/main/java/com/sample/jsonthemer/MainActivity.kt
@@ -5,10 +5,12 @@ import android.os.Bundle
 import android.support.v7.app.AppCompatActivity
 import android.view.Menu
 import android.view.MenuItem
+import android.view.View
 import com.sample.jsonthemer.databinding.ActivityMainBinding
 import jsonthemer.JsonThemer
 import jsonthemer.model.BaseThemeModel
 
+
 class MainActivity : AppCompatActivity() {
 
     companion object {
@@ -59,4 +61,18 @@ class MainActivity : AppCompatActivity() {
         currentTheme = style
         recreate()
     }
+
+    override fun onWindowFocusChanged(hasFocus: Boolean) {
+        super.onWindowFocusChanged(hasFocus)
+        if (hasFocus) {
+            window.decorView.setSystemUiVisibility(
+                    View.SYSTEM_UI_FLAG_LAYOUT_STABLE
+                    or View.SYSTEM_UI_FLAG_LAYOUT_HIDE_NAVIGATION
+                    or View.SYSTEM_UI_FLAG_LAYOUT_FULLSCREEN
+                    //or View.SYSTEM_UI_FLAG_LIGHT_NAVIGATION_BAR
+                    //or View.SYSTEM_UI_FLAG_HIDE_NAVIGATION // hide nav bar
+                    //or View.SYSTEM_UI_FLAG_FULLSCREEN // hide status bar
+                    or View.SYSTEM_UI_FLAG_IMMERSIVE);
+        }
+    }
 }
\ No newline at end of file
diff --git a/sample/src/main/res/layout/activity_main.xml b/sample/src/main/res/layout/activity_main.xml
index 4c04e28..8c51f33 100644
--- a/sample/src/main/res/layout/activity_main.xml
+++ b/sample/src/main/res/layout/activity_main.xml
@@ -26,9 +26,10 @@
                 android:id="@+id/toolbar_layout"
                 android:layout_width="match_parent"
                 android:layout_height="match_parent"
+                android:background="@{themeModel.toolbarColor}"
                 android:fitsSystemWindows="true"
                 app:contentScrim="@{themeModel.statusBarColorDrawable}"
-                app:layout_scrollFlags="scroll|exitUntilCollapsed">
+                app:layout_scrollFlags="scroll|exitUntilCollapsed|snap">
 
                 <android.support.v7.widget.Toolbar
                     android:id="@+id/toolbar"
@@ -45,9 +46,10 @@
             xmlns:tools="http://schemas.android.com/tools"
             android:layout_width="match_parent"
             android:layout_height="match_parent"
-            app:layout_behavior="@string/appbar_scrolling_view_behavior"
-            tools:context="com.sample.jsonthemer.MainActivity"
-            tools:showIn="@layout/activity_main">
+            android:fitsSystemWindows="true"
+            android:fillViewport="true"
+            android:overScrollMode="never"
+            app:layout_behavior="@string/appbar_scrolling_view_behavior">
 
             <LinearLayout
                 android:layout_width="match_parent"