This was done fully on one side of the scales (the non-clip side) of a Tasman and in the spydie hole too. Also pictured is a para that I did up with glow in the spydie hole and the lanyard hole (pics didn't turn out too well).
What did I use? Glowpaint (ultra v11, or v10 whatever is newest) from glow-inc.com.
The only problem is that the 'paint' is a suspension in some kind of super tough clear-ish nail polish deal. I say super tough because I've been roughly EDC'ing the Tasman and the para, with no real signs of wear on the paint...Another problem is that it kinda looks like boogers in the daytime, but when charged up, it looks so cool...
Phil
I took these on my cell phone, so it obviously isn't pro quality...if I can find my native around here somewhere, you can see another example...