ui stule update

src/LightEditor/LightEditorWindow.cs

@@ -3,6 +3,7 @@ using System.Collections.Generic;
 using System.Text.Json;
 using Cthangover.Core.Factories.Impls;
 using Cthangover.Core.UI.Lights;
+using Cthangover.Core.UI.Theming;
 using Cthangover.Core.Utils;
 using Cthangover.Tools.Services;
 using Godot;
@@ -40,6 +41,7 @@ namespace Cthangover.Core.UI.Tool.LightEditor
         public LightEditorWindow() : base("tools/light_editor/title")
 		{
 			controller = new LightEditorController();
+			CthangoverTheme.Apply(this);
 			BuildUI();
 			LoadBackgroundList();
 		}