Color256 = range[0 .. 255]
ColorHex = object
ColorRgb = object
ColorXterm = enum Black, Red, Green, Yellow, Blue, Magenta, Cyan, White, BrightBlack, BrightRed, BrightGreen, BrightYellow, BrightBlue, BrightMagenta, BrightCyan, BrightWhite
func `$`(c: ColorRgb): string {....raises: [], tags: [], forbids: [].}
func hexToRgb(s: string): ColorRgb {....raises: [], tags: [], forbids: [].}
func rgb(r, g, b: int): ColorRgb {....raises: [], tags: [], forbids: [].}