Because there's no such thing as too much Tennessee Orange, I decided to paint my office with it. Here's a photo of what my office looked like before painting:
Here's the finished product:
Not bad, huh?
The University of Tennessee says the official color for Tennessee Orange is Pantone 151. If you ask a paint store to match that, they won't have the slightest clue what you're talking about because that's a system used by printers, not by the paint sales industry.
If you really hate Home Depot and/or Glidden paint, you can probably track down a Pantone color chip book, order it, bring it to your paint store of choice, and have them color match the chip. Or you could just go to Home Depot and ask for Tennessee Orange Glidden paint. They have a whole line that matches various college colors.
If you go with the Glidden paint from Home Depot like I did, you will probably be terrified when the first coat doesn't go on smoothly, with streaks of yellow in it. Don't worry, it'll look fine when you're done. I recommend a coat of gray primer and three top coats. My office looked okay after two coats, but the third one made a big difference.