yeah, i've had those before.....although they didn't ever do well or hold their pink color, ended up turning more of a light green and very very pale pink.
they are a variation of what people call pink stardust PE, or desert storm PE. the pink specks just depend on the lighting.
I have 4 small colonies of them. I really think they are a different paly altogether than the regular stardust pe's. I kept the one frag at the bottom fo tank for 3 months and they turned all white with the pinkish rim similar to the picture. The rest have always just kept the speckled/splashed look even though i've played with placement in the tank. I've got a 20 polyp stardust pe colony right now at the very top of the tank, hasn't changed 1 bit in 2 months.