I can never remember whether grey or gray is the American spelling.
Gray and grey are used interchangably (although I can't seem to remember the correct spelling of this word) in American English.
"You take turns, advise and protect one another, even heal or be healed when the going gets too tough. I know! That's not a game--that's friendship!" ~Shelly Mezzanoble, Confessions of a Part-Time Sorceress: A Girl's Guide to the Dungeons & Dragons Game
