I PM'd you this reply back in July because you posted the question in the FAQ section, where I couldn't respond.
Hi Carl,
This is strange, and I have never heard of this happening. Bone Charcoal case colors may fade over time due to wear or surface oxidation. Some say that direct sunlight caused them to fade. But I have not seen them turn into a blued appearance.
I would suggest that you repost this topic in the general DoubleGun BBS @ doublegunshop.com forum
You posted this in the FAQ forum, and there is no option to reply except via PM.
It would help matters if you had some photos of the case colors after you had the job done, and photos now.
It would also help to know if you applied anything to the case colored surface such as lacquer or wax which might have caused this color change. Storage conditions could provide a clue. Some guys have noted that cleaning their case colored parts in an ultrasonic cleaner has removed crud and surface oxidation, and a good deal of color has returned. We've been shown some remarkable before and after photos of this effect.
Keith
At the time, I didn't know that the frame had been coated with a lacquer. So it seems unlikely that the case hardening colors became oxidized. Knowing that now, I think I'd start by stripping the protective coat off, and hope it was the lacquer that discolored for some reason. In any event, an ultrasonic cleaning isn't going to touch the case hardened surface until the lacquer is removed.
