Literal Colors from hex values

literalcolor.swift

public final class LiteralColor: UIColor, IntegerLiteralConvertible {
  public typealias IntegerLiteralType = Int
  public init(integerLiteral value: Int) {
    let netHex = value
    let red = (netHex >> 16) & 0xff
    let green = (netHex >> 8) & 0xff
    let blue = netHex & 0xff
    assert(red >= 0 && red <= 255, "Invalid red component")
    assert(green >= 0 && green <= 255, "Invalid green component")
    assert(blue >= 0 && blue <= 255, "Invalid blue component")

    super.init(red: CGFloat(red) / (255.0 as CGFloat), green: CGFloat(green) / (255.0 as CGFloat), blue: CGFloat(blue) / (255.0 as CGFloat), alpha: (1.0 as CGFloat))
  }

  required public init?(coder aDecoder: NSCoder) {
    fatalError("init(coder:) has not been implemented")
  }
}