Thanks for the replies. I've had a piece in my sps tank a year ago that looked like this one, although the one shown here is lacking color, mainly because the tank it came from had improper led lighting and poor husbandry.
I can tell by watching it slowly color up that the lime green is coming back and could indeed be the natural color...
This is a pic of my frag that looked a lot like the pictured here...
Again, do not know the name of it, hopefully will help to identify with the natural coloration perhaps...
Thanks for all input