That clear neon looks cool. Already have a thought on the use—
If anyone has played Doom 3, there are some nice effects/scenes where a peaceful, normal looking room (very) briefly changes lighting to reveal demonic messages on walls while a scream, backwards chant or some demon growl suddenly goes off really loud. Even in the game, it has a very cool "did I just see that" kind of effect that is also disturbing.
I could see this having a cool, instantly stunning effect on an audience. Imagine a group of actors looking all normal when the "zombie virus" is smoked down upon the group, the lights change, and there before everyone's eyes they change into walking corpses.
Because the stuff is invisible, it lends itself to cool possibilities in scenes where everything is presumed to be normal.