Okay, I've smoked a fair share of different strains and the ones of particular quality always seem to have a unique color. I always thought that red hairs and white crystals serve as the storage for the THC, and yet there are certain weed variants that are famed for being dark, or purplish (purple haze, black widow, etc.), and then you've got some strains of Kush, which is definitely good, but is a lush green. So I was wondering, is the dark part THC or some other active toxin? Does the dark have any sort of effect distinct from the white when smoked? I haven't experimented enough with high-class weed to distinguish effects and was wondering if anyone could help me out.