RE: what colour of fletching?
Personally I like to use 3 black 4" feathers. Guess it's just a hanger-on from my old field and target days---30+ years ago. I was coached by a pro and he always drummed into my head that all I should be doing is aiming till my arrow hit it's intended target. The mind should be doing nothing else. Therefore I never found a need to see my arrow going, and still don't. I know where it is going by just knowing where my pin was when the bow went off.