I personally believe you should have some miles on you and be gray at the temples, or it would be a tough look to pull-off successfully. It could also become your trademark or schtick, which could be good, or not-so-good. I work with a guy who is a tie freak, and not only does he wear inappropriate ties for our trade(funeral and cemetery) he also is not taken seriously because of his affectation...that, and he's a real a**hole.