OColor.cmykmap
method add_color : Color.cmyk -> int
method add_colors : Color.cmyk list -> int list
method colormap : Color.cmyk Color.map
method find_exact : Color.cmyk -> int
method find_nearest : Color.cmyk -> int
method map : Color.cmyk array
method query_color : int -> Color.cmyk
method set_map : Color.cmyk array -> unit