Bleach will etch it. I wouldn't go that way. I had a set done like that and didn't like them at all.

Jerry,
You prep the barrels by sanding down to 400 grit and I'll give them a shot with my black/white process. If they don't come out acceptable, no charge. If you like them, a $100 would make me feel good about my time.

Or, I can share with you the process.