Fabric dye, for seats Options

[blu94gt]

So before I put the car on the market I want to finish the black conversion from that nasty blueish color. I have the seats left to do. I know there's like a black spray-dye stuff at auto-zone, how well does that work for just a basic application like this? I would spray the seats and the cloth section in the doors with it.

And yeah I searched, found a couple basic posts but not a lot of useful information

[JFrost9]

i wonder if this spray would work on the actual floor carpet and headliner...cuz im way too lazy to buy a new carpet and re-line the headliner...im not too worried about the seats though, hoping to get some covers fabricated.