Abstract: A sign comprising one or more elements of indicia for storing light energy and discharging light. The element of indicia may have a thickness of about 3/16? or otherwise in the range of about ?? to about ¼?. The resin composition includes photoluminescent resin and a polymer resin providing light conduction and light storage properties. The resin composition may comprise about 35%-40% photoluminescent resin and about 60%-65% polymer resin. If backlighting is included as part of the sign the resin composition may instead comprise about 25% photoluminescent resin and about 75% polymer resin. The resin composition may be a thermo-plastic, thermo-set casting or molding resin.