Goni changing colors?

[DracoKat]

i bought this as a green Goni almost a year ago. I noticed it's picking up the color purple in the past few weeks. Is this normal?

I do have a purple one right next to it- does it morph or something?

I think it looks cool as ombré

 

[DracoKat]

bump

 

[nautical_nathaniel]

Wow! I've never seen or heard of one doing that!