I was leaning towards the red, as well, but then i saw the close-up, and realized it was a glittery,hot rod metallic paint job, and had to pass. So, none of them really grabbed me, but the black/grey was least offensive.
I agree with the above post to buy the frame you like most, and build it to suit.
(BTW, who cares which one anyone else likes best, which one do YOU like best?)