On Monday 17 December 2001 20:47, Lourens Veen wrote: > <snip - complicated stuff> I just realised that you could just add a layer with colour (0, 255, 255) and put it in front of your image, then set its layer mode to multiply. Much easier. Brightness might be a problem though, make sure your highest percentage is always equal to 255 (so for 25%/75% you would do 85/255) and I think it should be ok. Lourens