I'd go with white calipers and black lettering. IMO any other color would look odd. If you go black you'll have a hard time seeing them with your black rims, the white will pop and give a better flow with the white on your car.
2013 V6 Auto - Performance White
Satin Black Borla S-Types | Satin Black MCA 18" Wheels | Eibach Pro-Street Coilovers | Whiteline Adjustable Panhard Bar | GT500 Spoiler | Cervini GT500 Upper & Lower Grilles | SHR Quarter Window Louvers | RTR Decklid