I should take a look at the first beta.. however I'm quite certain I already did the colors there... Maybe I'll just have to make castube again and use your palette idea... it looks nice and there will probably be less color reduction... but that would require a lot of work (actually all work)... at least, I don't have to do the medium pillar anymore, you did it;P

the problem is.. I don't know exactly which tiles don't use the wall tile colors.. afaics (as far as I can see) it's just the medium pillar, so in that case it's worth the effort

used programs:

mainly mspaint
palette suite for modifying the palette
psp for loading modifications