geez another brainiac on the forum - you just raised the IIS IQ level 10 more points! stop it!
seriously you sound like you know what your on about and have serious passion for astronomy - good to have you on board!
I have heard that black is the best colour
my mate does his tubes powder coated black - he knows the science behind it like you - buit to see it in the dark he puts some astronomy related 'glow in the dark' sticker near the base (the ones that absorb light/heat? during day and glow at night) - i got an image of the world as mine
works nicely -
also white scopes reflects the star light, thus ruining your night vision
