I don't believe the carpet is faded. I think it's bad pictures. If the carpet was faded the seats and the rest of interior would be in terrible condition also. Plus I think the carpet is brown or gray, it doesn't look blue.
on a blue interieur the carpet was always blue, too.
The car saw a lot of sun. Check the pic with the rear door open. On the upper doorpanel you can see a lot of discoloration.