Textures with a color palette

[stucky77]

Okay, I'll post the dumping issue there, but the paletted texture question still applies here.  The official build dumps some images that are not full screen as black and white, and apparently they have some sort of indexed color that uses a lookup table from what I understand.  I was wondering how to create new images that would replace those and still be color accurate.  Is this possible?  Anything I use to load in place of these images come out looking green.