I assume you are referring to the carpet dye? It does work. I used some years ago. I'd guess you'd find it hard to paint inside the car. Be careful of overspray.
It maybe crunchy at first but it will make it black again. BTW, look on the pointy board. This has been done before.
It maybe crunchy at first but it will make it black again. BTW, look on the pointy board. This has been done before.