Output `NSColor.controlAccentColor` as RGBA HEX, from macOS

swift

import Cocoa

class ViewController: NSViewController {
    override func viewDidLoad() {
        super.viewDidLoad()
        print("controlAccentColor:", NSColor.controlAccentColor.rgbaHexString)
    }
}

public extension NSColor {
    // Return: '#CC0000FF',
    var rgbaHexString: String {
        guard let rgbColor = usingColorSpace(NSColorSpace.deviceRGB) else {
            return "FFFFFFFF"
        }
        let red = Int(round(rgbColor.redComponent * 0xFF))
        let green = Int(round(rgbColor.greenComponent * 0xFF))
        let blue = Int(round(rgbColor.blueComponent * 0xFF))
        let alpha = Int(round(rgbColor.alphaComponent * 0xFF))
        let rgbaHexString = NSString(format: "'#%02X%02X%02X%02X',", red, green, blue, alpha)
        return rgbaHexString as String
    }
}