         }
     }
     
-    @IBInspectable public var strokeColor: UIColor = UIColor.black() {
+    @IBInspectable public var strokeColor = UIColor.black {
         didSet {
             self.strokeColor.setStroke()
         }
     }
     
-    @IBInspectable public var signatureBackgroundColor: UIColor = UIColor.white() {
+    @IBInspectable public var signatureBackgroundColor = UIColor.white {
         didSet {
             self.backgroundColor = signatureBackgroundColor
         }

// YPDrawSignatureView is open source
// Version 0.2.0
//
// Copyright (c) 2014 - 2016 Yuppielabel and the project contributors
// Available under the MIT license

        return UIImage(cgImage: imageRef)
    }
    
    
    private func scale(_ rect: CGRect, byFactor factor: CGFloat) -> CGRect
    {
        var scaledRect = rect
