Can I save this acro?

[MikeP]

I've had this acro for about 4 weeks. There isn't any color to it yet, if it were to color up I think it would be a nice blue. A small patch of white on the lower left corner has appeared and it's slowly getting bigger. Is there anything I can do or will this coral just slowly die? There is good polyp extension throughout the rest of the coral though.

Thanks for any help