guinea pig changing colour?

[econerd]

this may sound a bit odd, but our white female has turned brown around her eyes and a bit on her back. at first i thort she had gotten herself somewhere dirty so i gave her a bath but it didn't come off. now its steadily growing darker and there's a clear line where the white ends and brown begins. ive got a pic here, dunno how clear it is.

I dont suppose anyone knows why this has happened and is it anything to worry about?
Thanks

ETA shes not albino, the red eye is just from the crap camera

 

[Wiebke]

Colour change throughout life can happen and is nothing to worry about.

Here is my neutered boar Llewelyn at one year old:

And here he is at four:

 

[econerd]

wow that's quite a difference in colour. I wonder why it happens then, as shes only just over one. I'm wondering now if she will get any more brown on her and go totally brown or just the speckly she is now, its only been a couple of months since she started turning.

Thanks for the advice