One question that has come up more than most is "How do I get the Marathon CLUT in a form I can use it?" Hamish Sanderson has answered that question, with two files: a Photoshop CLUT file (directly importable), and a PICT containing all the colors in a nice grid, that you can eye-dropper anywhere you need in any painting program. There are also some very useful hints on making Marathon artwork in the readme... if you're doing serious work in Anvil, and having troubles making things look right, get this file. 'Nuff said.