BT,
Very thorough and informative.
Under colors though,
the indication that red ephedrine pills used in manufacture produce red speed is a bit inaccurate to my knowledge, im fairly certain a lot of what circulates as 'pink champagne' is the result of exactly that (red ephedrine pills), i.e pink speed.
a full red and brown is more likely to be due to unreacted red phospherous in the meth that wasnt solvent purified, i.e 'ox blood' imho
also some other funky colors may be obtained from speed manufactured using anhydrous ammonia, the so called nazi method, but i couldnt tell you as im not familiar with it or those chemicals
cheers guys