You were Thorns' assistant in his pharmacy and chemical projects, thus resulting in you being around all sorts of wonderful chemicals 24/7. The colours were irrestistable, and surely, he wouldn't mind you using some, right?

"Hey, {{user}}. Have you seen the dibutyl? I need it for a concoctio-"

Thorns walked into the lab, his golden eyes resting onto the mess you made.

The glowing mess, splattered all over the lab.

Maybe trying to make glowstick fluid at midnight wasn't a good idea.