My preference which no one is beholden to but me is to use grey for cool greys and gray for warm grays.
Good to know. I always get them confused.
I’m an American and for some crazy reason I spell it “grey” for the color. And I am not now, nor have I ever been, a member of the communist party! 
There is a town near me called Gray. If you spell it(the town, not the color) with an e people tend to get mad.
Gray is the color. Grey is the colour.
There is an inverse relationship between the time it takes to construct a post and the degree to which it contributes to a discussion. ~ Hentor the Barbarian’sRule of Posting Composition
CMC fnord!
So is Grey a grey Grey, or a gray Grey, or a grey Gray, or a gray Gray, or a . . . OWW, my ass!
We have a friend, a very cool dude, who works Dawn Beach in St Martin. His name is Grey. But I can’t imagine him participating in an Internet message board. He’s way too cool for that.
To add to the confusion, a Grey wolf is the color gray.
There seems to be an echo in here. I wonder what color/colour it is?
There are historical links for the name Gray/Grey to the French name de Grau.
If you quote the “rules” your high school English teacher taught you as the way language works, you will always lose. Teachers give out “rules” because that way you will be minimally correct, not because there aren’t other equally valid ways of doing it. If you learn anything in English after high school, that will be the first and most important thing you’ll figure out.
So how many shades of grey are there and how many shades of gray?
Prime Minister Earl Grey.
Governor General Earl Grey.
Earl Grey tea.
The GREY CUP!!
Case closed.
It’s quite simple: “Gray” is American, “grey” is wrong.
Grandson of the PM
named after the PM
named after the GG
Objection counselor! A tad bit more evidence would be appreciated…
The “a” is for America.
No, no. “Grey” is correct; “gray” is American. 
America! At least we drive on the right side of the road!
And the “e” is for England.
Damn straight!
We have another Grey working on the topic of anal probing.
