I'll admit, I harass any person on the USF campus wearing other school colors. I got someone so good that for the rest of the summer session, my fellow classmate had to rub it in my face that he was wearing USF gear.....I was loving every moment of it! ;D Here's a nice approach, if you see someone wearing other school colors, go up to them and ask them how they like our campus and school (make them think that you assume they are visiting). When you get the reply, "Oh no, I'm a student here." Then you make them feel small about the colors they're wearing like, "Could have fooled me. A true USF student wouldn't wear another school's colors. Have a nice day." But say it loud enough for everyone around the person to hear the comment too ;D !!!