I'm not a fan of the Colliseum. What is the deal with those areas behind the end zone and in the corner where there are no seats? It looks so dumb IMO. They have those temporary bleachers and then nothing else on that end. I've never liked the atmosphere there. At least not the one captured on TV.
If you look close at the picture of Tennessee there are a lot of folks who aren't in their seats. Must have been taken at the end of a blowout or something as you can see a lot of gray bleachers.