This Halloween, Burger King introduced the BLACK Whopper, and as a result turned our poop green. This, we would think would ruin any chances of colored buns making a comeback -- at least in the States. 

Not in Asia, though! Colored buns are all the rage, apparently.

This from a McDonald's in Beijing, China. The bun is GRAY. Kind of a light silver gray with granite specks. This time it's a pork meat, however, with a couple of strips of bacon.

No word on if the gray bun will make an appearance in America. Likely not.

See the photo of the gray McDonald's burger here.