Some TITOs fade more than others, trying to keep them away from heat and light is important. The TITO you show is quite collectable as it marks the casino name change.
I use 3 high stamp collectors pages to hold TITOs, black stiff paper with mylar plastic flaps. I have seen some all plastic page actually hurt the TITOs so I do not suggest using them. Stop by the TITO collectors meeting at the convention, Fri at 2PM, to talk and trade TITOs.