White ?? Leather Coral ID

[zambavi]

So I think I have a white Leather here... possibly... any ideas? It's not colored up from when I found several months ago. Has grown from vey small to about the size of half a golfball. A couple other smaller ones have shown up close to it. So it's growing... it's getting light.... shows good polyp extension during the day... is in a tank where lots of other corals are doing well.... just think it's odd it's staying white... very white...

 

[zambavi]

Anyone?

 

[GreshamH]

Sarcophytum