I work with a glow in the dark pigment called strontium aluminate mixed with acrylic paint. It glows best when charged with UV light. The gallery that I am installing in wanted the painting's lighting on a timer, but they wanted the lights to fade on and off. That is why I am working with them, and why I needed a programmable microcontroller. Otherwise, I would just use a standard looping timer.
When setting up the MOSFET, is it the same type of setup that you would do with 12v LED strips?