I have designed stickers for my camp, OKNOTOK, and for the volunteer Gate, Perimeter, and Exodus department at Burning Man. They tended to stick to the themes assigned each year by the Burning Man Org (the BORG). 

GPE logos must be black and white, each including a lock, a key, and the number 13, and they tend to favor skulls.

OKNOTOK’s colors are red and black (natch).