diff --git a/examples/3d/anti_aliasing.rs b/examples/3d/anti_aliasing.rs
index 6e71640f74372..255ccf00bde18 100644
--- a/examples/3d/anti_aliasing.rs
+++ b/examples/3d/anti_aliasing.rs
@@ -264,7 +264,7 @@ fn setup(
     // Plane
     commands.spawn(PbrBundle {
         mesh: meshes.add(shape::Plane::from_size(50.0).into()),
-        material: materials.add(Color::GRAY.into()),
+        material: materials.add(Color::rgb(0.1, 0.2, 0.1).into()),
         ..default()
     });
 
diff --git a/examples/3d/deferred_rendering.rs b/examples/3d/deferred_rendering.rs
index 1bf1978851779..63a51f995ad99 100644
--- a/examples/3d/deferred_rendering.rs
+++ b/examples/3d/deferred_rendering.rs
@@ -97,7 +97,7 @@ fn setup(
         ..default()
     });
 
-    let mut forward_mat: StandardMaterial = Color::GRAY.into();
+    let mut forward_mat: StandardMaterial = Color::rgb(0.1, 0.2, 0.1).into();
     forward_mat.opaque_render_method = OpaqueRendererMethod::Forward;
     let forward_mat_h = materials.add(forward_mat);
 
diff --git a/examples/3d/tonemapping.rs b/examples/3d/tonemapping.rs
index 2617a9eb2c12d..1608640be4992 100644
--- a/examples/3d/tonemapping.rs
+++ b/examples/3d/tonemapping.rs
@@ -107,7 +107,7 @@ fn setup_basic_scene(
     commands.spawn((
         PbrBundle {
             mesh: meshes.add(shape::Plane::from_size(50.0).into()),
-            material: materials.add(Color::GRAY.into()),
+            material: materials.add(Color::rgb(0.1, 0.2, 0.1).into()),
             ..default()
         },
         SceneNumber(1),