changing interior colors

I've had great success painting plastic interior parts in my Intrepid with flat black Duplicolor Interior paint from Autozone...
You simply wipe down the plastic with an ammonia-based cleaner, and then shoot it.
Comes out nice and flat black, looks as though it came black from the factory!
Helped me paint some tan interior upgrades that I got a deal on to match my factory black interior.

As for vinyl dyes, I've never used them, but the steering wheel on my grandfather's 66 Nova SS was black and he had it dyed to match the color of his car.
Came out awesome...