Yes, there are a few real-world unit repaints for the Acceleration F/A-18, most of which can be found at avsim.com
Repaints include: VMFAT-101, VFA-204, VMFA-142, VFA-192, VFA-106 and more.. some foreign operators are also represented.
Also, the stock US Navy scheme is VFA-132, which was an actual squadron based on the east coast and in service from 1984-1992.