The attribute that defines the default settings for an Editor Window that supports overlays.
See also ISupportOverlays and OverlayCanvas.
using UnityEditor; using UnityEditor.Overlays; [OverlayCanvasSettings(defaultColor = new float[] {1, 0, 0, 0.8f}, defaultColorDark = new float[] { 1, 0, 0, 0.8f }, defaultColorLight = new float[] { 0, 0, 1, 0.8f })] public class OverlayCanvasSettingsExample : EditorWindow, ISupportsOverlays { [MenuItem("Test/Open Canvas Window")] static void OpenWindow() { GetWindow<OverlayCanvasSettingsExample>(); } }