Assuming your interior is black, the standard is SEM Landau Black. I used it on my center console which was original and crack free, but uneven color, and it now looks, literally, brand new.
There was a SEM cleaner, a product called "SEM sand free" (which I believe softens the plastic slightly so dye will penetrate better) and of course the dye.
The SEM site has the info.
As good as my console came out, I wouldn't think twice about using spray cans of dye, vs a gun. The panels' surface is textured and the SEM spray cans work better than anything I've ever used. Even the Trim Black paint comes out so smooth you can't tell it's from a spray can.