    deferred class
    	EV_COLOR_I

    General
    	cluster: implementation_mswin
    	description:
    		"Eiffel Vision color. Implementation interface.
    		See ev_color.e"
    	keywords: "color, pixel, rgb, 8, 16, 24"

    Ancestors
    	EV_ANY_I*

    Queries
    	Default_name: STRING_8
    	delta: REAL_32
    	interface: EV_COLOR

    Constraints
    	red within range
    	green within range
    	blue within range
    	red 8 bit within range
    	green 8 bit within range
    	blue 8 bit within range
    	red 16 bit within range
    	green 16 bit within range
    	blue 16 bit within range
    	rgb 24 bit within range
    	red 16 bit conversion
    	red 8 bit conversion
    	green 16 bit conversion
    	green 8 bit conversion
    	blue 16 bit conversion
    	blue 8 bit conversion
    	name not void