Pure DMT crystals are white, and it has nothing to do with the quality of the DMT, but just the purity. Less pure crystals can range from little orange, to dark orange, to pink(although I believe the pink was caused by the mimosa pigment-not sure on that), and also you can just an orange-ish brown goo, called full spectrum. From personal experience, I have not noticed any draw backs form smoking a less pure DMT (very orange in color) the only thing is, you just gota add a little more to your desired method of ingestion, which doesnt seem to bad to me. But this is all from personal experience and research, and I am open to corrections.