I can't see how those Yakkays would be any better ventilated than a Pro-tec or other skate-esque helmet - it's only got vents in the top! Cool idea, though - hopefully the next generation will have some more vents, and absurd hat styles (top hat, sombrero, viking helmet, rasta tam w/ prosthetic dreadlocks, etc.

Honestly, any one-color road helmet is probably as 'cool' as you're going to get while still having decent ventilation. Kraynick's (on Penn ave) usually has a good selection of plain, reasonably vented helmets for $20ish, and they protected a pal's head when he got a brick dropped on his head from a 2nd story roof, so you know they work.