I'm planning on getting a Henry Big Boy in 357 magnum, and I would have liked to get the color case hardened model, but they seem to be the most rare and where they do pop up are about $200 more than the standard blued finish. I was wondering if it was possible to color case harden one of the other finishes, there is a polished brass, nickel, and blued finish options for that rifle. The blued finish would be ideal, as it has checkering. I would not do it myself, I'd want to take it to somebody. Is this possible? What kind of finishes do gun parts have before they are put through the color case hardening process?