diff --git a/auto-claude-ui/src/shared/constants/config.ts b/auto-claude-ui/src/shared/constants/config.ts
index 213882cd..48a06596 100644
--- a/auto-claude-ui/src/shared/constants/config.ts
+++ b/auto-claude-ui/src/shared/constants/config.ts
@@ -9,6 +9,7 @@
 
 export const DEFAULT_APP_SETTINGS = {
   theme: 'system' as const,
+  colorTheme: 'default' as const,
   defaultModel: 'opus',
   agentFramework: 'auto-claude',
   pythonPath: undefined as string | undefined,