public static function cmyk2cmy( $cmyk )
	{
		list( $c, $m, $y, $k ) = $cmyk;
		$c	= min( 1, $c * ( 1 - $k ) + $k );
		$m	= min( 1, $m * ( 1 - $k ) + $k );
		$y	= min( 1, $y * ( 1 - $k ) + $k );
		return array( $c, $m, $y );
	}