Create a UIColor instance with `RGBA` values in the integer range [0, 255] (instead of float [0.0, 1.0])

UIColor+CreateFromByteValues.swift

import UIKit

extension UIColor {
    convenience init(
        redByte red: UInt8,
        greenByte green: UInt8,
        blueByte blue: UInt8,
        alphaByte alpha: UInt8
        ) {
        self.init(
            red: CGFloat(red)/255.0,
            green: CGFloat(green)/255.0,
            blue: CGFloat(blue)/255.0,
            alpha: CGFloat(alpha)/255.0
        )
    }
}