I'm working on an effect that replaces colors by index. And this is much harder than I thought, when I started a few month ago. I'm at a point, where I don't make any progress. There are too many questions and issues, and I really don't know which way to go.
That's why I think it's time to get the community involved. First I will give you an impression of what is currently possible, without giving to much dry information. Please download this .rar:
It contains two apps that demonstrate the effect (The second demo uses Disk.fx in addition). If you think it is worth developing it, I will post all information about how it works, together with its advantages and disadvantages. And the issues that lead me to ask for your help...