Doomstars, I wasn't saying it was a mistake for not looking. I was just letting you know if you wanted to check up on other conversations about it while waiting for people to reply here.
(American's are notoriously lazy for things like that)
I consider it more of a written accent. Colours and Colors aren't really pronounced the same... close, but not quite. Now, theater versus theatre... that's just people trying to be "fancy" with how they write it.