设置SKScene背景色动画

如果你只想在 UIView

func colorChanges() {
    UIView.animate(withDuration: 1.0, animations: {
        self.view.backgroundColor = UIColor(displayP3Red: CGFloat(arc4random()) / CGFloat(UInt32.max), green: CGFloat(arc4random()) / CGFloat(UInt32.max), blue: CGFloat(arc4random()) / CGFloat(UInt32.max), alpha: 1.0)
    }, completion: {
        (value: Bool) in
        self.colorChanges()
    })
}