Interior Plastic Trim and Panel Detailing

[RPOZ11]

Interior plastic trim and panel detailing

What is the best way to clean the plastic trim pieces for the interior of the cab?

I am looking at :
- Door Panels
- A pillar plastic trim
- Headliner plastic trim
- B pillar plastic panels (the ones between the door and the rear window)
- Dash panel

Of interest for me right now is the A, B, and headliner trim.
I am in the process of gathering up the correct pieces.
I am going to re-dye the trim as needed.

What processes do you guys use to remove prior dye?
What are correct ways to do this without damaging the pebble grain present?
What dyes do you use, and what is the correct process for re-dying them; especially for a long lasting result?

THANX