Seeking Ivory paint for interior plastic

Hi All, I have a 12-year-old Range Rover Sport HSE and it was used for quite a long time by a very heavy smoker.

As a result the plastic on the dashboard has got terrible and patchy yellow stains which no cleaner seems able to remove.

Therefore does anybody of you know which Ivory spray paint I could use to match very carefully the original colour?

Also, I have finally restored the ivory leather front seat (which wasn’t ivory when I bought it) so it’s now decent.
This is the last item on the restoration after extensive deep cleaning and it’s really annoying that I can’t figure it out :-(

I suspect Hycote Land Rover ivory touch up spray paint is for the exterior only ….