you wont find anything that can dye it as plastic will not absorb anything

you have to paint it

so scotch pads to key it up, these will leave the texture finished as a scotch pad is like the green part of a washing up sponge

once its keyed up use a plastic primer or maybe an acid etch primer so the paint has something to stick to, you will need to key up the primer for the paint to stick them just use your colour of paint you want and depending on what colour use laquer after