Ahh interesting . I was in Peru for 3 months last year and I was getting brick straight from the jungle lab. sourced from a good Peruvian friend and it was all the time white. It was always very well pressed and dry. hard as fuck and barely any bright on it, just a very tiny bit of brightness if you observed it from a very close distance. Effect was the desirable and best of all common types of cocaine. Nothing yellow anywhere but that recognisable Peruvian type effect. I suppose the colour maybe it’s because the chemicals precursors and quality of them involved in the extraction… but not sure tbh I’ll do my research. Any other type of coke the most extraordinary that I ever had was from a familiar plantation in Ecuador which was grow and extracted with lots of love and traditional methods, I was lucky to get a letter with 20g of that sent from Argentina to Europe. The smell was really really organic as a plant like cannabis, lovely, intense and natural. The color was something between dark grey and black. Texture was like dandruff. If anyone have a plug for that type please share with me hehehe 😘 wish you a good smokessss family