The pocilloporids can be really pink (not a surprise since they are named after Pocilloporin, a pink pigment that some of them contain) - check out stylophora, seriatopora, and pocilipora.
There are also some really nice pink LPS, especially some of the brain corals like cynarina and scolymia, etc.
Of course, there's also the pink tube anemones and the RBTAs.