Jadis:
Don't ask about the title. Anyway I have spent hours trying to figure out why my Voodoo card would not support lighting effects. People keep saying Graal does not support them but the first week of G2k1, the effects were enabled. Then it donned on me. 24 bit+ colors!
So if your colors do not work make sure your computer's color settings are 24 bit or higher.
For the record, I have a Voodoo 3 2000 AGP.
EDIT:Bleh I also have DX8 and the latest drivers