Ron's Gun Shop, in Oshkosh, WI shows examples of their work on their website. I called and talked to him but haven't sent one to him yet to do. I'm curious if he can mute the colors done with cyanide, like you can with charcoal pack, but didn't think to ask when we spoke last. If not, I understand they can be toned down with careful use of a metal polish.

www.ronsgunshop.com

If memory serves me, his name is Paul.

All my best, SRH

May God bless America and those who defend her.