Leather changing colour

[shoura]

My leather has gradually been getting darker and looking greener since I got it in October--it has about tripled in size and the polyps are always extended so I assume it's quite happy and healthy but it doesn't look as pretty as it used to....is somehting wrong with it??
Here are some before and after pics---it actually looks even darker in real life than it appears in the picture....

 

[Nagel]

Looks like a green polyp sarco to me.. I wouldn't complain, they are not as common as the normal yellow sarco.

Sounds like its happen and adjusting to its environment..

 

[RokleM]

That is incredibly impressive growth. I agree it sounds as though it's just adapting and going to it's natural colors. Keep up the good work

 

[drummereef]

Looks very happy, imo. Nice pics.

 

[shoura]

Thanks very much! Well I'm glad it's happy!
Someonr elsewhere suggested it might be preparing for a moult hence the colour chnage? any thoughts on that? (personally I think that as the colour change has been so gradual it is probably just growing into its natural colour as suggested here)

 

[Aliie]

Any suggestions on getting my leather to wake up? It sometimes lays down and then a day or so later stands back up. I have had it for 6 months I guess and never once has it opend. I moved it to my nanocube last night hopeing to get it to purk up. Everything grows better in the nano but I want it in my other tank.