%!
/sys_setcolorspace /setcolorspace load def
/sys_setcolor /setcolor load def
userdict/is_rgb false put
/setcolorspace
{
	sys_setcolorspace
	currentcolorspace 0 get /DeviceRGB eq
	userdict/is_rgb 3 -1 roll put
}bind def
/setcolor
{
	userdict/is_rgb get not
	{sys_setcolor}
	{
		3 copy
		2 copy eq 4 1 roll eq exch pop and
		{setgray pop pop (!\n)print flush}
		{/DeviceRGB sys_setcolorspace sys_setcolor}ifelse
	}ifelse
}bind def
%