John, the air cleaner assembly should be painted 80% gloss black, and what I mean by that is the gloss level is not the same as the exterior of the car which is 100%. Normally what I use is Duplicolor #T100 Universal Gloss Black spray paint over the top of bare metal just like the factory did, but instead of a smooth metal finish I glass bead it. Some people use primer, I don't as I want it done just like the factory, and if you prefer to use a primer then use a black primer with a final sanding using 800 grit paper before painting it. This paint is a lacquer and will dry to the proper sheen. One thing though, do not paint on a humid day or the paint will "blush" on you. (will have a cloudy look to it)....................As for the filter, black, I have seen white, but black is more prevelant...........RatPack................