Then there is a non-radiactive luminous powder (called Newlite 2002) you can get from Timesavers.com. It comes in green, yellow or white. Here is a link to the White:
http://timesavers.com/search.html?q=32150&go=Search Green is catalog # 32148 and yellow is # 32149. It would be interesting to see if it were similar to night sights.
I have never tried it. You basically add it to clear glue, mix and then apply. According to what I am reading, it features a strong light storing capacity and is generally used on clock and watch hands.