style(theme): 客户端切换深色视觉风格

lib/pages/player/widgets/drama_comments_sheet.dart

@@ -413,13 +413,16 @@ class _CommentPostSuccessOverlay extends StatelessWidget {
                   vertical: 10,
                 ),
                 decoration: BoxDecoration(
-                  color: Colors.black.withValues(alpha: 0.82),
+                  color: AppColors.mediaBlack.withValues(alpha: 0.82),
                   borderRadius: BorderRadius.circular(8),
                 ),
                 child: Text(
                   message,
                   textAlign: TextAlign.center,
-                  style: const TextStyle(color: Colors.white, fontSize: 14),
+                  style: const TextStyle(
+                    color: AppColors.onPrimary,
+                    fontSize: 14,
+                  ),
                 ),
               ),
             ),