My GloFish is turning green. Help!

[drag0nf1sh]

I received a GloFish tank for my birthday and I bought several of the danio GloFish. One of my fish, his/her original color is yellow, has sort of a green smudge going from its mouth to its underbelly. I've googled some stuff but I haven't been able to find a definite reason why this is happening. Please help.

 

[bettaowner]

Can you get a picture.

 

[drag0nf1sh]

It's kind of hard since he swims around like crazy.