Picking some brains.....
Personally, I've always preferred more earthy colors; tans, coppers, darker greens, maroons, and darker browns. I am going with a dark copper on my '74, similar to factory bronze metallic.
I think that they look good on A-bodies, along with some high impact colors like sublime, plum crazy, and basin street blue.
A nice medium or dark green with a bit of pearl would be an excellent choice.