used theme in main.dart

lib/main.dart

@@ -4,6 +4,7 @@ import 'pages/bookmarks_page.dart';
 import 'pages/collections_page.dart';
 import 'service/storage.dart';
 import 'service/share_intent_service.dart';
+import 'theme.dart';
 
 void main() async {
   WidgetsFlutterBinding.ensureInitialized();
@@ -75,9 +76,8 @@ class _MapsBookmarksState extends State<MapsBookmarks>
   Widget build(BuildContext context) {
     return MaterialApp(
       navigatorKey: _navigatorKey,
-      theme: ThemeData(
-        colorScheme: ColorScheme.fromSeed(seedColor: Colors.deepPurple),
-      ),
+      theme: lightTheme,
+      darkTheme: darkTheme,
       initialRoute: CollectionsPage.routeName,
       routes: {
         CollectionsPage.routeName: (context) => const CollectionsPage(),