can't find what's causing the fill

animateDoorbell.go

@@ -15,6 +15,8 @@ type Doorbell struct {
 
 func (a *Animation) animateDoorbell() {
 	if a.countDown > 0 {
+		a.ctx.SetColor(color.Black)
+		a.ctx.Clear()
 		a.ctx.DrawImageAnchored(a.doorbell.image, 0, 0, 0, 0)
 		a.countDown -= 50
 	} else {

board.go

@@ -51,7 +51,6 @@ func (a *Animation) Next() (image.Image, <-chan time.Time, error) {
 	default:
 		a.animateMario()
 	}
-	//a.ctx.SetColor(color.White)
 	select {
 	case msg := <-a.mqmsg:
 		json.Unmarshal([]byte(string(msg.Payload())), &incoming)