hey bobby, on the birdsnest, read this page of the thread. it comes up there too!

http://reefcentral.com/forums/showth...5&pagenumber=6

this is the main part of the answer, i think:

This is a variant of the seriatopora hystrix with missing color competence. this means the coral is missing the genetic qualities to train colors. The coral trains pale yellow till brown colors in dependence of the available nutrients. I also have the pink color variant.