Bill, that's very interesting. The actual colors must be only microns deep. I often wondered if case color would be removed by blueing removers, as I have seen guns that I suspect had been cold blued right over what may have been left of the original case. It would be great to remove the blue and save the original colors if that's possible. I also wonder how the colors differ physically or chemically with bone charcoal vs. cyanide. Maybe this would be a good topic for a new thread.

Voting for anti-gun Democrats is dumber than giving treats to a dog that shits on a Persian Rug