Fix backgroundColor using

lib/miniplayer.dart

@@ -213,7 +213,7 @@ class _MiniplayerState extends State<Miniplayer> with TickerProviderStateMixin {
                                   blurRadius: widget.elevation,
                                   offset: Offset(0.0, 4))
                             ],
-                            color: Theme.of(context).canvasColor,
+                            color: widget.backgroundColor, //kopa
                           ),
                         ),
                       ),