It's the colours you can use in sprites.

God your avatar scares the crap out of me. It's hypnotic and mind-raping at the same time.
Thanks for the help.

HAHAHAHAHA! I finally got most of the offsets right on my minigun, after having been told multiple different things by many people. However, where my hands go while holding it is still incorrect, and I am afraid to touch it as trying to fix those has twice led to having to restart. I'm going to post it, and if anyone would be awesome enough to fix them for me, it would rawk. (Be warned though, I'm 99% sure I did something that will make you wonder what the fudge I was trying to do.)