When the frame was blued, it would have been polished in preparation for the blue. This removing all the case colors. The frame will still be hardened so do not think that it needs to be re colored from a standpoint of function.
The bluing can be chemically removed without too much problem using a couple different methods. The result, as previously stated, will be a dull grayish finish since the metal surface is being etched somewhat. Most will see this gray surface more attractive than the bluing. And the bluing job on that frame is not very good or at least it has no held up well.
In order to properly strip the bluing, the frame would need to be completely taken apart.
As for a restoration of the case colors. It should not be considered unless the WHOLE gun is being restored. Or else it will look out of place.
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B. Dudley
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