Whoa !  huge database of extraction info ! Thank YOU!

... one chemistry-afterthought - tell me if you know this to be possible, but I think that if chlorine gets added to an aromatic  molecule like a tryptamine, then it  ought to very-much change colour of the molecule.

I don't know if it's a visible-specturm change, but any halogen (ie bromine, chlorine as in dmt-chloride..) will add a bunch of 'loose' electrons that can spread out and 'share' orbits with the rest of the dmt-type molecule. So if  this makes big colour changes happen in those alkaloids used in dye-making, maybe it's true for dmt/dmt-Cl too.?.