Yeah, the ones in the link you attached are a light tan with bright purple tips. In the pic you posted of yours, it looks entirely white with very little color at tips. Its my understanding that pretty much all nems in the lfs
are bleached to some extent when you buy them, the lfs
just doesn't usually have the right lighting for them. That doesn't mean that yours can't come back to bein healthy!! I bought a GBTA that was a little bleached not too long ago, and now it's becoming nice brown with green tips. Don't give up on it. Just make sure it gets plenty of light and I give mine very small bits of food every few days, and it's coming back.