I wouldn’t emphasis too much on the colour by itself. I’m guessing that the age of the vine has a substantial effect on harmala concentration. (Older = additional concentrated. So, I'm inclined to feel that Banisteriopsis muricata is the actual purple ayahuasca, and Alicia anisopetala is just a jungle vine https://trentonvoihh.blogdigy.com/top-latest-five-where-to-buy-ayahuasca-in-canada-urban-news-55900402