message: Mising # in hex color if color spacename is failed (mac)
diff: @@ -134,7 +134,7 @@ extension NSColor {
  var hexString: String {
  guard let rgbColor = usingColorSpaceName(NSColorSpaceName.calibratedRGB) else {
  - return "FFFFFF"
  + return "#ffffff"
  }
  let red = Int(round(rgbColor.redComponent * 0xFF))
  let green = Int(round(rgbColor.greenComponent * 0xFF))
  