As far as painting plastic goes just a light sanding with a scotch brite pad to lightly scuff up the entire surface and after its scuffed make sure the areas to be painted are as clean as you can get them.
next apply Dupli-Color adhesion promoter to the entire surface at least two coats.
now your ready for the paint color of your choice i don't like to use any more than two coats on plastic it builds up fast and runs easily.
i would recommend clear coat as well it ads more durability but some people don't like the shine.
maybe not exact but very very close, It's made to match factory paint colors but it's usually just a little off, you probably wouldn't notice unless you were trying to match something with that color already on it.