I have a friend that got a frag of these or very similar a little while back. I think they look like tie-dye!
If I remember correctly, you don't run halides right? These guys are brightly colored and pretty true to the picture you have shown but would fade under halides or strong t-5's. For this reason, I would spend my money cautiously, meaning, I would want to make sure they weren't faded from their lights. I honestly don't know if once faded, if they would resume coloring, someone else may be able to answer that.
They are smaller type zoas and while he has a new head sprouting, so far they don't seem to be super fast growers. This is true of most of the fancier zoas in my opinion. The super common ones grow like weeds, lol.