It sounds like “collidg”. I don’t think I can say he used the word “colored”, but I will say it seemed like he started to and then swallowed the last half of “college” because his linguistic buffer crashed.
They're all co-ed. Co-ed is short for "co-educational" and long ago became a synonym for "female student" when they were first admitted to formerly all-male colleges under programs labeled co-educational. That's why "co-ed sorority" is redundant and a phrase I've never in my life heard anyone use.
I'm not saying it made sense in the context. The dude is a grade A moron. But he might have been using "co-ed" to mean "young female student," a common phrasing.