fix(flutter): 改为浅色播放页底栏

test/player/player_fullscreen_test.dart

@@ -11,6 +11,7 @@ import 'package:fruitshorts/core/data/models/play_ticket.dart';
 import 'package:fruitshorts/core/data/repositories/favorite_repository.dart';
 import 'package:fruitshorts/core/data/repositories/playback_repository.dart';
 import 'package:fruitshorts/core/data/repositories/watch_history_repository.dart';
+import 'package:fruitshorts/core/theme/app_colors.dart';
 import 'package:fruitshorts/pages/player/widgets/player_center_toggle.dart';
 import 'package:fruitshorts/pages/player/widgets/seek_progress_bar.dart';
 
@@ -186,6 +187,16 @@ void main() {
     final rail = tester.getRect(
       find.byKey(const Key('player-interaction-rail')),
     );
+    expect(
+      tester
+          .widget<ColoredBox>(find.byKey(const Key('player-background')))
+          .color,
+      AppColors.ink,
+    );
+    final panel = tester.widget<Container>(
+      find.byKey(const Key('player-controls-bottom')),
+    );
+    expect((panel.decoration! as BoxDecoration).color, AppColors.card);
 
     expect(bottom.height, lessThanOrEqualTo(200));
     expect(bottom.top, greaterThanOrEqualTo(screenHeight * 0.78));