Hi, Thanks to the help from this list, I have now interpreted the gradient format and my program can now freely use at least the simpler GIMP gradients (linear interpolation). After all this work, I had hoped that there would be some central listing containing lots of cool gradients that I could just immediately use.... but all I can find are the ones that come with the GIMP already and a few isolated ones on the web. Does anyone know if there is any central location where individuals can contribute their funky gradients? If not, should there be one? This could be easily automated to allow people to submit their favourite gradients and build up a really excellent resource... Thanks gordon -- Dr. Gordon F Royle, http://www.cs.uwa.edu.au/~gordon, gordon@xxxxxxxxxxxxx --