GET THE BROWN!! If you have any inclination or initial draw to brown and could see yourself in it, definitely do it! It's probably the rarest color you'll see out there....Actually, both the green and brown make it look the most regal and Astonesque, but you'll be much more unique in brown, there's not another color like it I've seen in other cars.
I went with bright flat white/dark wheels, pano, cf spoiler for the sporty contrast, but white cars are a dime a dozen, and the white/dark thing I see a lot on Scions, Optimas, and Jettas.....My 2nd choice was diablo himself mc red as it is loud and striking, and while a particularly bright shade of red, it sure wouldn't be the only red car on the road. Brown doesn't really fit me personally but I don't think that makes it look any less attractive to me. Challenge convention!