I forgot what company I got it from, but it specialized in making gitd markings on gun sights. SUPER long duration paint (nearly 4 hours!) that came in 4 different colors(yel, blu, grn, and orng) in a cool little sampler pack, for like 15 bux.
Painted a ceiling tile black, then used a 2" paint bush and the 'bristle' method(dip brush in paint then run finger thru the bristles) to make a really cool 'targeted area' fine spray. Few of those, and it looks just like a nebula! Then a few passes with the 'flick' method(dip brush then just flick your wrist) in a different color to make bigger stars on the fine spray and man, it looked AWESOME!!! Well, as awesome as paint can look.
Fiber Opt will always be king in m book.