Pssshaw. Actually, college is where they stop being picked on and life begins. It's amazing. You can wear whatever the fuck you want, most of the preppy kids seriously come in pajamas. Like everyday. They never get dressed, it's messed up, and yeah they might get stared at by some people but think of it this way:
College is generally full of kids who are smarter and more mature (mature mostly happens at non-universities, since big universities are just daycare for preppy kids that aren't ready for the real world yet) than the other kids (It sounds harsh, but I'm of the assortment where I believe some people are just born smarter and more understanding than others). So generally college kids are very open minded to just about anything, I mean you get your few assholes, that happens no matter where you are in the world, but generally speaking people are more respectful and courteous.
Sooooo as a matter of fact not only should they keep dressing that way, they should sigh a big sigh of relief knowing that they won't go through much strife as a result. I'm at MCC/WSU right now and haven't gotten shit from anyone at either campus. Aside from the homeless or Detroit natives. Actually I pissed off a Johova' Witness once too....it was great.
Also, as for me being picked on, Scary Guy already brought up the topic I started awhile back (thankssss, 'cause I didn't feel like finding it )