The program shows some of the things you can do with the scripts.
The code to process sprites frame by frame is taken from xot's site http://www.gmlscripts.com/, a nice site with many useful scripts.
Download hsv_blending.gmk from Host-A
Download hsv_blending.gm6 from Host-A
Download hsv_blending_gm8.gmk from Host-A
EDIT: I have added a .gm6 file as well, but I have not tested it. Thanks to LGM.
EDIT EDIT: I have added a _gm8.gmk file as well, for those who are too lazy to debug in gm8 (or do not know how to do this rather easy job).
Edited by brac37, 03 June 2012 - 09:38 PM.