Dallas vs. the Cowboys? What?

Today I woke up from a nap and turned on the Chiefs-Cowboys game, only to experience severe vertigo.

"Which team is the Cowboys?" I thought, and started to panic. I thought the red team would be the Chiefs, but if you look at their helmets, they had Dallas marked with a star.

What's up with that?

Apparently, I wasn't the only person to have that question: [Link]