First, there's no such thing as platic "dye". It is all paint, just sometimes referred to as dye.
Go to a paint supply shop, take a piece of interior trim with you (there are different primers for different plastics and they have to test it, some companys only offer one...that's OK too)
Tell them what you are doing and buy the stuff they suggest.
What you'll need is:
-PreVals (one with jar and the rest just the air cylinders...it's basically like a refillable paint can but mad out of glass)
-Grey or red scotch brite pads (I prefer the red)
-Plastic prep/cleaner
-Plastic primer
-ready to spray mixed paint (to your color choice)
-ALOT of room and time
Follow the insructions to the letter, it should turn out great. I redid mine in a graphite black, checks pics at address in my sig.
Warning- It will scratch. No way to avoid it. i just use a q-tip and some of the left over paint to touch mine up every now and then.
ALWAYS keep the information on the color code and brand of paint you used so you can get more if needed.