The trims on my Xantia are getting a little bit tatty and as they are original i would like to keep them.

My idea is to soak them in a bucket of sugar soap solution to get them back to base level and then see where i go from there.
I assume i will then need to use a plastic use paint primer and then similar type paint for the top coat.
Should i also put a lacquer coat on as well, trying to keep the colour the same as original so all ideas and thoughts really appreciated.
Colin