Carpet color rejuvenation options?

[area53 at validpath.com (Jeff Toomasson)]

I went ahead and bought the TMI carpet kit for my resto mk1 and, to be honest, 
wasn't that pleased with it - too many pieces, most of which don't have a form 
fit. But what pissed me off most about it was that they neglected to cut holes 
for the e-brake and gearshift. At the time, it appeared they actually had the 
sense to mark the holes to be cut from the underside by the customer. 
Unfortunately, the marking for the gearshift was off a few inches to the left 
leaving a nice whole on the driver's side floorpan!  >:(  When I called TMI to 
get another piece, I got some dumptruck who gave me attitude "we don't mark 
them blah, blah"...Maybe one of Santa's elves creeped into the box and put that 
blue chalk mark there...yeah...I also came to find out from him that the cost 
of replacing the piece is nearly as much as a whole kit. F*cking crooks.....

Now my original carpet was not in that bad a shape, just a bit faded. I was 
wondering what everyone's thoughts were on rejuventaing the color. I thought 
about just buying a big-ass garbage can and filling it with black dye. I'd bet 
there's also some black fabric spray paint out there. Any other ideas?

Even if I get another TMI kit, I'll still have to do this for the rear wheel 
arch carpet for the S - as you may have guessed; TMI doesn't provide those 
pieces either...

Thanks and Happy Holidays everyone!

Jeff