spray on fabric paint/dye for TVR faded carpets?

[CleG]

Some of my carpets have faded in the sun.
Has anyone else had this happen to them. If so have you tried a spray/dye etc and did it work?

Cheers

[CleG]

Cheers, I thought about the dye route but I was a bit worried that some are not set until washed ... I imagined lots of running blue dye all over the interior when it got wet

I have had a good look on the net for sprays .. but nothing yet, I will keep looking.