My guess would be that they will eventually either color up to be the GPE's from zoaid, or the Green Stardust PE's. They can start out looking the same, but the GPE's just turn more green. The GSDPE's will develop a purplish, then pinkish white ring just inside the skirt, while the center gets as green as the GPE's from zoaid. Eventually, they can develop speckles or white hazy colorations in the oral disc (too many variables to go into what can make them what color-light, nutrient, etc.).