Aye it's a C-123 I was basing this on, and it is nothing but bare metal and no nose art at all.  basically it is just a mater of removing the "Air Force" layers from the paint kit and adjusting the alpha channels to toss in reflectivity over the already present grey color of the aircraft.  I ended up with MAJOR hours at work and flight school, so havent even touched my sim in over a week, though.