"Are they Purple"

The following is a dialog I had with a friend today in school.
Friend: Where are you thinking about going to college?
Me: I'll probably go to SMU
Friend: SMU's a good school - that's in Dallas, right?
Me: Yes, it's in Dallas. It's a great school, especially for business.
Friend: Are they purple?
Friend: Where are you thinking about going to college?
Me: I'll probably go to SMU
Friend: SMU's a good school - that's in Dallas, right?
Me: Yes, it's in Dallas. It's a great school, especially for business.
Friend: Are they purple?