Riggo44
Super Freak
It is a glow in the dark effect. Light must shine on it for a few seconds to get the effect to activate. I like the fact that the GITD effect is nearly invisible until you activate it with light. If you plan to put the print behind glass, consider a glass that will allow light through (if you want the GITD to show up).
Awesome that's what I wanted to hear. Good point about the glass. Thanks