I think the checkered tank theme might work with the tach done also, completing the effect.
My taste leans toward the simple, so I'd leave out the girl(too cliche) and stick to just black and white(adding the colors takes away from b&w's classic appeal), though I do think troppo's take on it is pretty cool.
If the checkers didn't look just perfect, I'd go with a simple black or white like ieism said.