Nice! I actually had saw glow in the dark pigments when looking on Amazon for ... whatever you call the stuff you use to add dust effect to miniatures. Forget the name. Didn't think it would come out all that well.

Did you just mix Lahmian medium with something like this? https://www.amazon.com/dp/B00H4SPSU8/

I wonder if you could mix that with something like how /u/Spacetronaut does his glowing effect on some of his models to make Grey Knights that have glow in the dark blue runes, for example.