I am thinking about making some robot units with flicster and GIMP and I am wondering how I make the colors depend on what civ your playing.

http://forums.civfanatics.com/showthread.php?t=158020

Yes, Read through the Tutorials concerning Unit Palettes so you understand the basics about them. It is always best to understand something rather than only have the procedures that someone uses. The Reasons are because there are different methods that can be used to accomplish the same thing based on the different programs that are available.

For example, if you made animated Units using Poser, that would have different procedures than a different Animation program such as Bryce or PovRay. Same goes for Graphics Editing Programs. Unless you use exactly the same programs as were used in a Tutorial, you will need to understand the Basics so you can adapt the Procedures to any different programs you use.