Tried washing the dark stuff in boiling acetone or EA. It doesn't lose the color. It has a stronger taste and smell (nutty, like the seeds) compared to the tan stuff. My suspicion is that it is a dark colored pigment in the seed hulls, maybe taking that out before cooking and grinding. Overall similar effects to the tan stuff but no systematic evaluation.
It was not a lot of the yield, around 3% total and the dark stuff only 0.4% or so. I low MASAd the loaded acetone and put in the freezer, let it crystallize (this came as the dark - yellowed stuff), then the still loaded acetone was decanted to another Glass and then heavy MASAd at room temp and refrigerator, which gave me light tan small crystals that were hot acetone washed until acetone came out transparent (2 washes). This was dried and is more like a light tan powder than whatever I got before which were mainly crystals and flakes dark yellow or yellow-brown. It tastes a little bit bitter and very nutty, no smell. No taste of malic acid whatsoever (nnDMT from masa or fasa do taste like malic and fumaric acid).
Now, with the light tan stuff I have tried insuflatting up to 5 mg (many times in a single day, thankfully it does not burn like NNDMT) with and without harmine freebase. Sublingual up to 20 mg with and without harmine freebase. Intramuscular up to 20 mg. Will eventually try vaping and evaping. Effects vary in each type of administration. Lasts a minimum of 1 hour and a half, with a long tail. Somewhat electric feel. Colors and textures intensify beautifully, the visual acuity feels like hallucinations. A distinct spacial sense with open and closed eyes. Oevs and cevs have a pulse to them and are more like a glimmer or static instead of well defined shapes and colors. Overall not very visual. Music also wasn't very different than normal state. Not emotionally engaging, very neutral. You can stop tripping and go do something and come back and it's still thereI, very persistent and non-debilitating. IM is a different beast, and you get clear visuals and hallucinations at peak effects plus everything else I mentioned. Ended up being very different from NNDMT. I was considering the sayings of 2-4x stronger than DMT but it doesn't make sense to me now. I would gauge that 30 mg IM gives you the full effects for either but bufo lasts 2-3x more.
All felt very safe and healthy. No vasoconstriction. Maybe a little bit of nausea when insufflating and oral-sublingual.