Update...
Today I discovered the joy of a $17, (Harbor Freight 20% off coupon), 6" electric orbital polisher!
Apparently, if very carefully applied, the color does come back!
I located some oxidation going on on the top of my rear endcap, (thanks to this thread, I purposely went hunting). After cautiously using my new toy with some ProtectAll oxidation remover & color restorer, Thor's HD-MAX gelcote recovers very nicely!