@staticmethod
def cmyk_to_rgb(cmyk_value):
    """
        Converts a color value of DeviceCMYK to DeviceRGB (returns a tuple).
        """
    cyan, magenta, yellow, black = cmyk_value
    return 1.0 - min(1, cyan + black), 1.0 - min(1, magenta + black
        ), 1.0 - min(1, yellow + black)
