Two of them didn't support anyone as they weren't football fans - one was on the Peace Studies course, so I'd have expected nothing else. But the one who actually did come from Brighton supported Chelsea ... which backs up what you said,
As it happens, I also played football with a Palace fan...
I remember walking into my halls of residence on my first day at uni, wondering who my new living companions would be and discovering that the person next door to me was a Palace fan.
Out of eight of us on the top floor, four came from Sussex and I was the only Brighton fan there. Something...