@Montanadabman @puccinia @Deleted @circus_animal Proceed with caution using carbon to decolor and acids to degum… both for the same reason: leftover acid in your crude (leached from carbon that was activated with a strong acid and incompletely washed, for example) can result in unwanted isomerization of cannabinoids.
I agree that Winterization after degumming makes sense, since degumming effectively creates fatty acids, which are some of the compounds removed during Winterization. At the very least, a cold precipitation and filtration in semi-polar solvent like ethanol:water azeotrope should be performed after any degumming. It is for this reason that I advocate for degumming directly in said semi-polar solvent.
After degum and cold precip/filter, I recommend louching (water-precipitating a milky microemulsion) the cannabinoids from the ethanolic solution, and partitioning with n-heptane or similar n-alkane to extract resin/distillate from the ethanol layer. Wash this hydrocarbon with 5% sodium bicarbonate, then pure water, then NaCl brine… then dry the solution with anhydrous sodium sulfate and decant. This will neutralize, decolor, purify, and dry the resin in alkane solution. Then evaporate to acquire cannabinoids for use or redistillation.