Its yellow with a slight tingle of green primarily, the polyps are bright purple. I haven’t seen one before buts its really pretty. How much is it worth, I got it, and a good deal of other SPS, as a misplaced order from an online dealer (got my real order later, so just a ton of free sps).
It's an acropora but still far to small to id properly. Lots of them look the same as frags. Give it another month or two and we can narrow it down a bit. Good luck!