I was actually going to comment as well that these appear very similar to the everlasting gobstoppers, which are freaky bright palys I must say. The longer skirts are likely a result of higher flow, and the lighter color of the skirts is probably a result of a low-nutrient system with good skimming. I have several morph that I keep in a couple systems, one skimmed and one not, and the skimmed colonies are much lighter ("white" skirts, lighter background colors) than the non-skimmed polyps from the same colonies. Can't say for sure the OP's are EG's, though they are very remiscent, but the qualities of the skirts can be explained by tank params, IME.