Well 'gray' is the American spelling so I pretty much thought all Americans spelled it that way xDD
American English = A whole different language for me.
We say "fringe" but Americans say "bangs" >_<
We say "trousers" but Americans say "pants"...we use pants to refer to underwear o.O
And an American asked me the other day why I spell "mom" as "mum" >_>