diff --git a/playground/app.config.ts b/playground/app.config.ts
index e60a3d22..38d601e3 100644
--- a/playground/app.config.ts
+++ b/playground/app.config.ts
@@ -1,10 +1,6 @@
 export default defineAppConfig({
   ui: {
     primary: 'sky',
-    button: {
-      slots: {
-        base: 'font-semibold'
-      }
-    }
+    gray: 'cool'
   }
 })
\ No newline at end of file