Just found the company that makes this glowing stuff:
http://uglow.fr/And it's not "glowing stuff." It's "
Phosphore particules by electrical excitation*."
*Yes, as in, "she's giving me excitations."
And, despite the .fr domain of the website, their business address is Hong Kong. Likely, right down the street from our friends Matt and James.
If only they weren't busy preparing for the HK motorcycle show and they would drop in here and give us some details.