How's if shaken, I've been thinking about this for a while and looked up some videos read a few things about how dye can ad hear differently to different kinds of pastics.
Seams to be more popular in the rc world from my searches.

I know there's a lot of dressings and products for this but nothing seams as permanent to me as geting the parts in some boiling water with some salt vinegar and some dye. Really open up the pores in there.

Anyone ever dyed some parts?
I'm thinking of trying a good amount of my faded engine compartment plastics windshield cowels rear bumper valences some small parts.