如何正确获取CGColor的颜色组件

import UIKit

// 创建一个UIColor对象
let color = UIColor.red

// 获取CGColor对象
let cgColor = color.cgColor

// 获取颜色组件
let components = cgColor.components

// 判断颜色空间类型
let colorSpace = cgColor.colorSpace
if colorSpace.model == .rgb {
    // RGB颜色空间
    let red = components?[0]
    let green = components?[1]
    let blue = components?[2]
    print("红：\(red ?? 0)，绿：\(green ?? 0)，蓝：\(blue ?? 0)")
} else if colorSpace.model == .cmyk {
    // CMYK颜色空间
    let cyan = components?[0]
    let magenta = components?[1]
    let yellow = components?[2]
    let black = components?[3]
    print("青：\(cyan ?? 0)，品红：\(magenta ?? 0)，黄：\(yellow ?? 0)，黑：\(black ?? 0)")
}