Live gradient rendering on XCode Storyboard with IBInspectable

IBInspectableGradient.swift

import UIKit
@IBDesignable
class CustomView: UIView {

@IBInspectable var gradient:Bool = false {
     
        didSet {
            if gradient
            {
                let topColor = UIColor(red: 3/256, green: 51/256, blue: 75/256, alpha: 1.0)
                let bottomColor = UIColor(red: 14/256, green: 149/256, blue: 217/256, alpha: 1.0)
                
                let gradientBackgroundColors = [topColor.cgColor, bottomColor.cgColor]
                let gradientLocations = [0.0,1.0]
                
                let gradientLayer = CAGradientLayer()
                gradientLayer.colors = gradientBackgroundColors
                gradientLayer.locations = gradientLocations as [NSNumber]
                
                gradientLayer.frame = self.bounds
                self.layer.insertSublayer(gradientLayer, at: 0)
             
            }
           
        }

    }

}