Mixing Phosphorescent Powder in clear resins such as Amazing Clear Cast or Alumilite Clear will achieve a uniform luminescent yellow-green glow. The more powder added, the brighter the glow. Phosphorescent powder must be charged with light to glow. If your application needs an opaque resin, slush cast a high concentration of the Phosphorescent powder into an initial pour to coat the sides, then simply back that up with the material you are pouring.
Prior to use, read all Technical Data Sheets/Instructions and Safety Data Sheets linked below.