I had my protec Custom Painted after my first season. I no longer wear it unless at the pool, or on flat runs, but I'd thought I'd share my custom job with ya. My friend in Colorado Springs can do custom helmets for ya. Let me know if you;re interested, and I'll get you his contact information. Just tell him what you want, and he can make it so. He used the same process as if painting a car, used clear coat too so that it can withstand some abuse.
Here's the link to the thread with my helmet I started a bit ago.: