They did last time they played in the Alamo Bowl vs. Texas after the 2013 season. Not shocked, but 2 years seems pretty short even for them. FWIW, I expect TCU to wear white helmets, purple jerseys and white pants.
Nope. Only reason they did it for this game was because it was the annual blackout game and TCU doesn't have a set of the new template in black. Don't expect TCU to get a new set for another 2-3 seasons.