I have color support kind of working. The extra memory and color palettes are in, but some of the tiles seem to reference the wrong palette.
Maps I'm not surprised don't work, I didn't expect them to. However the sprites should be correct.
Also I've been making some heavy changes to the design, nothing that's required a rewrite, however all this new color stuff seems to have completely broken all the old games. I can't play a single one and the few that at least start mess up after a few seconds. [sad]