diff --git a/app/lib/main.dart b/app/lib/main.dart
index 8694141..9f0ba3e 100644
--- a/app/lib/main.dart
+++ b/app/lib/main.dart
@@ -78,7 +78,7 @@ class MyApp extends StatelessWidget {
     return MaterialApp(
       title: 'Flutter Demo',
       theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
+        colorScheme: ColorScheme.fromSeed(seedColor: Colors.yellow),
       ),
       home: const MyHomePage(title: 'LeineLab e.V. Key App'),
     );