I like my women to have most of their limbs and have a heartbeat. I know, I know... I'm shallow, but someday I'd like to have kids, y'know?
Also most of her own teeth.
All joking aside, I think going out with a girl taller than me would be weird, unless I feel head over heels for her and it didn't matter to me at all.
And I usually hesitate when it comes to brunettes for some reason. No offence, but I just prefer to go for something more.. interesting, or different, I guess.
Blondes, red heads, and girls with light brown hair are good, but similar coloured hair to me just doesn't register for me sometimes. Now I sound a bit mad, so I'll hastily add that if I really click with a person and feel a connection with them, then most physical considerations are moot.