RGB1              355 ext/gd/libgd/gd.c 	RGBType RGB1, RGB2;
RGB1              359 ext/gd/libgd/gd.c 	SETUP_RGB(RGB1, r1, g1, b1);
RGB1              362 ext/gd/libgd/gd.c 	RGB_to_HWB(RGB1, &HWB1);