When I purchased no. 26 from my friend JD, he had informed me that he had installed a very nice carpet set about 10 years previous. In that short period of time though, the sun turned it more of a nice shade of brown than it's original black. It has no holes, or wear throughs, it's just faded. I contemplated replacing it, and probably will do that in the next off season. I did stumble upon a you tube video detailing how to dye your auto carpet in situ, so I thought I'd give it a shot. This isn't for the concourse crowd, but perhaps a few of you may find this interesting and will consider giving it a go.
I used Rit Black Dye, mixed 1 to 1 with water. I liberally dabbed it on with a sponge. In theory they have numerous colors to chose from, so if you wanted to try this on your 65 Mustang convertible with the red pony interior, you're good to go. The end result seems to be a freshly dyed black carpet, still soft to the touch, unlike what you might get with using carpet spray paint.
Here is the video:
https://www.youtube.com/watch?v=AuyPiEGaNh0Here are some test areas I photographed:
https://imageshack.com/a/wo3l/1