zoas turning white

[dmh41532]

I have 6 different zoa frags, all are growing well. I have one frag that is slowly losing its color. it's growing new polyps just losing color. is this something I should be concerned about?

 

[ReeferBill]

Have you moved its location recently? Just keep an eye on it ,and hopefully it will color up,,...

 

[dmh41532]

I haven't moved it in months. I appears to be healthy otherwise, I am just curious, I've never had a color lose color, yet continue to grow.