flatbar, so you could (and should) use v brakes, get some single digits more power less frustration
if you are dead set on cantis the new shories are nice, way stiffer than the old ones so you get more power and better feel, and better at gettin them undone to get ur wheel off, i've got the old ones on my cx bike, and 2 friends just got the new ones and i've ridden em, as for color, you could get the 4s or the 6s the 4s are black i believe, while the 6s are silver
or u could get somthin else, but the new shorty design is way stiffer than the old design (just look at it, it makes sense