I don't know about a maroon paint, but I know you can get gold. There is a "universal gold" available in an engine paint (I think it's dupli-color) and plenty of companies offer an Oldsmobile gold. The Olds rocket motor was gold til the late sixties. If you're in Mesa you can try Space Age. They're an auto body supply company and they have every off the wall paint and usually in stock. The only issue there is it may not be available in a rattle can. Do you have a gun and a compressor?
I have a small "around the house" compressor and it doesn't have the psi output for a gun. I will give Space Age a call and see what they have. A guy this weekend suggested Powder Coating it, said the cost for a barrel is about the same as three or four cans of high heat paint.
Might have to look into that as well.