Put it in stable conditions with solid flow/lighting and leave it alone. It will more than likely look totally different a few months from now. Unless you can match the conditions it was receiving prior being tanked.
That particular color morph I have had trouble with. It always wants to go green at the base and just a little purple in the tips and coralites near them. Let us know how it does! I would agree it will need strong and white light to keep it looking close to that pic. I might try one again this year.