Swift Button Image Teinte

J'ai essayé de montrer des icônes de carte dans UialertController, mais lorsque l'image n'a pas d'arrière-plan transparent, je vais obtenir de la couleur grise

   let customView = UIView()
   // customView.translatesAutoresizingMaskIntoConstraints = false
    customView.backgroundColor = .clear

    customView.addConstraint(NSLayoutConstraint(item: customView,
                                                attribute: .height,
                                                relatedBy: .equal,
                                                toItem: nil,
                                                attribute: .notAnAttribute,
                                                multiplier: 1,
                                                constant: 100))


    var marginBtns:CGFloat = 10

    if yandexMap {
        let yandexBtn = UIButton()
        yandexBtn.frame = CGRect(x: marginBtns, y: margin, width: 30, height: 30)
        yandexBtn.setImage(UIImage(named: "yandex")?.withRenderingMode(.alwaysOriginal), for: .normal)
        yandexBtn.sizeToFit()
        yandexBtn.imageView!.layer.cornerRadius = 5
        urlYandexAction = urlYandex
        yandexBtn.addTarget(self, action: #selector(actionYandexBtn), for: .touchUpInside)
        marginBtns += 70
        customView.addSubview(yandexBtn)
        //alert.addAction(alertYandex)
    }
    ...
    let alert = UIAlertController(title: "Open in",
                                  customView: customView,
                                  fallbackMessage: "",
                                  preferredStyle: .actionSheet)
    alert.addAction(UIAlertAction(title: "Cancel", style: .cancel, handler: nil))

    present(alert, animated: true)