Allen,
The case colors are a result of the case hardening unless someone used a tourch. Any heat from a tourch that was hot enough to add color would soften metal. The color purple isn't just a movie! Purple on the receiver, especially purple circles, is a sure sign of a tourch job!
Take it to an expert for re-casing. They will first need to anneal the receiver before re-casing.
Mark
__________________
Don't hunt with a gun that will embarrass your dog!
USMC Retired
USMC Distinguished Marksman
USMC Distinguished Pistol Shot
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