He can do any type of custom work as long as you have a good clear image that you can send him (on the computer). From what i've heard, his prices aren't to bad either. Like a hat is only $20-25 and of course it gets cheaper the more you order. PM him over at exriders.
I've got a red one w/ red flames on my 400ex and should get my 450r black carbon fiber with red outlined silver flames today. I will post a pic when i get it put on. STR8WICKED is really good to deal with and fast too.
I e-mailed him last night and asked about getting a two-tone seat done with red and black for my R and he said he would do it for around $200. Pricy because he would consider it a custom job. Said he has no plans on doing two-tones for the R's.