Tool Box Color

Ok I have a new silver ram and want to add a tool box to the back of it. The problem is I am not sure what color I should get. I am not sure if black or silver would look better. Also was at Tractor Supply today and they now have a flat black tool box or glossy black tool box. Does anyone have a thought on which would look best. The truck has flat black bed rail caps on it from the factory. but bumpers are chrome. I just cant decide what would look the best.