UIColor extension for literal numbers

UIColor+Literals.swift

//
//  UIColor+Literals.swift
//  Created by dede.exe
//

import UIKit

public extension UIColor {
    public convenience init(red:Int, green:Int, blue:Int, percentAlpha:Int = 100)
    {
        let alpha = Float(min(100, max(0,percentAlpha))) / 100
        
        let factor = Float(255.0)
        let r = Float(max(min(red,      255), 0)) / factor
        let g = Float(max(min(green,    255), 0)) / factor
        let b = Float(max(min(blue,     255), 0)) / factor
            
        self.init(colorLiteralRed: r, green: g, blue: b, alpha: alpha)
    }
    
    public convenience init(literalColor:Int, alpha:Int = 100)
    {
        let r = (literalColor & 0xFF0000) >> 16
        let g = (literalColor & 0x00FF00) >> 8
        let b = (literalColor & 0x0000FF)
        
        self.init(red:r, green:g, blue:b, percentAlpha : alpha)
    }
    
}

//USAGE

let red             = UIColor(red: 255, green: 0, blue: 0)
let green           = UIColor(red: 0, green: 255, blue: 0)
let blue            = UIColor(red: 0, green: 0, blue: 255)

let redHex          = UIColor(literalColor: 0xFF0000, alpha: 100)
let greenHex        = UIColor(literalColor: 0x00FF00, alpha: 100)
let blueHex         = UIColor(literalColor: 0x0000FF, alpha: 100)