I have no idea how colors relate to personality, or in what context your roommate was trying to explain it! lol
The counseling center makes you take this survey thing of how you've felt in the past 2 weeks. Anything past 11 is apparently "worrisome" and I got an 18 so... I am supposed to be all suicidal and crap, which I'm not at all, but I get a big bright red place on their scheduling because they have to like... treat me special or something for being this messed up. Eh. I don't really know what green and yellow stand for, other than less messed up than I apparently am. (I think I was just having a really crappy communication day because I haven't slept in like 3 days)