Use Color::srgb* instead of Color::rgb*

Addresses Bevy [12163](bevyengine/bevy#12163)

Author: zhaop

crates/bevy_editor_pls_default_windows/src/gizmos.rs

@@ -119,14 +119,14 @@ impl EditorWindow for GizmoWindow {
     fn app_setup(app: &mut App) {
         let mut materials = app.world_mut().resource_mut::<Assets<StandardMaterial>>();
         let material_light = materials.add(StandardMaterial {
-            base_color: Color::rgba_u8(222, 208, 103, 255),
+            base_color: Color::srgba_u8(222, 208, 103, 255),
             unlit: true,
             fog_enabled: false,
             alpha_mode: AlphaMode::Add,
             ..default()
         });
         let material_camera = materials.add(StandardMaterial {
-            base_color: Color::rgb(1.0, 1.0, 1.0),
+            base_color: Color::srgb(1.0, 1.0, 1.0),
             unlit: true,
             fog_enabled: false,
             alpha_mode: AlphaMode::Multiply,