Uwe, There appears to be some problems in this algorithm. I'm certainly no colour expert, but the weak point seems to be in: >2. take a color pick of some point that has to be gray (say: 123 / 115 / 139) How can you know that this colour is supposed to be grey, and not a gray with a tint of blue, for instance? The problem is finding what is supposed to be exactly gray :-) The other problem seems to be that you'll lose some precision, but hopefully it's not more than a bit or perhaps two. For the UI adjustments, I'll leave that to the others :-) /* Steinar */ -- Homepage: http://members.xoom.com/sneeze/
