Is my percula clownfish "normal"

[MoshJosh]

The top of my clownfish has turned a very dark brown/black. I have read mixed things online about if this is normal or not. figured I would ask R2R.

pics soon:

 

[vetteguy53081]

The top of my clownfish has turned a very dark brown/black. I have read mixed things online about if this is normal or not. figured I would ask R2R.

pics soon:

Mine and many I know of also have. While called a percula or NEMO actually has pigments of or are Mocha and will transform to this coloration