import UIKit

class ViewController: UIViewController {

    var isBlue = true

    @IBOutlet weak var BlueView: UIView!
    @IBOutlet weak var GreenView: UIView!

    override func viewDidLoad() {
        super.viewDidLoad()
    }

    @IBAction func changeBackgroundColorOnTap(_ sender: Any) {
        var aquaColor = BlueView.backgroundColor

        if isBlue == true {
            BlueView.backgroundColor = GreenView.backgroundColor
        } else {
            BlueView.backgroundColor = UIColor(red: 0/255.0, green: 128/255.0, blue: 255/255.0, alpha: 1)
        }
        isBlue = !isBlue
}


    @IBAction func PanGest(_ sender: UIPanGestureRecognizer) {
        let point = sender.location(in: view)
        GreenView.center = CGPoint(x: point.x,y: point.y)