Certainly you would have 14" rotors; not sure what color calipers for 2011, but probably consistent with 2013: dark gray or black calipers with red "BREMBO" logo. But this assumes you bought it brand new and the car hasn't been taken to a brake shop that replaces caliper sets to change pads, such as Les Schwab.
Also, to get the Brembo package, you would need 19-inch wheels I believe, so do you have that size rim? There are Mustang and 5.0 red calipers, but these are not to be confused with the Brembo package.
Take pics and post them up.
What was the cost on your Brembo package on the printout? Mine was $1695, which included 19-inch wheels.