From my knowledge, I know spice extracted with naptha can be yellow because naptha also extracts oils from mimosa which tend to make it yellow. But when you further refine the spice (eliminating the dmt-n-oxide and other impurities)... the crystals become whiter.
It does strike my curiousity as to why when you extract with xylene, the "mystery alkaloids" they tend to be orange, and sometimes dark, brick red.
So glad to see you have overcome them.
Completely silent now
With heaven's help
You cast your demons out
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I lie compulsively, and I am subjected to mental disorders as to where I have trouble even considering my own existance.