Are you leaving the carpet in the car?I just did mine last week.I had the seats out figured this would be a good time to dye my carpet.I have a convertable and some parts of the carpet faded and some did not.My carpet is black..I have a thread here somwhere about this.I bought the RIT black dye powder and mixed it up and put it in a spray bottle and sprayed the carpet.It took 2 dye packs,about 6 cups of water and the carpet looks great....For black, at least, this worked.I let it dry 24 hours to be safe..