i bought a Atlanta pro return, navy blue w/navy blue inserts, was gonna get a reg. navy and spray paint the inserts baby blue, but found that return for 70 bucks, and didn't have to do anything with it.. i love it
I had to ask this question to our local pro shop for one of my players ordering equipment for next season and was told that RBK does do custom orders, but typically for teams only. He told me that they do sell overruns though and that if we gave him a color combination, that he could speak to the RBK rep and see if they had any in that color sitting around or if they could put one together using the parts from two separate helmets.
My best advice would be talk to your local pro shop...that is if you have access to a good local shop.