It's the same as painting something with base/clear. Matte finishes can be done 2 ways. First is by using any standard automotive paint as your base. Then clear it with a matte effect clear coat. Second way is to get a single stage 2k matte paint. I suppose it is easier since there is no clear coat needed.
They have a nice selection of colors including metallics and pearls for this type of paint here:
Hot Rod Flatz
They have a nice selection of colors including metallics and pearls for this type of paint here:
Hot Rod Flatz
The issue you may run into is you can't really wet sand flat or matte paint to correct any blemishes you may have in your paint as once you sand you need to buff to remove any fine sanding marks left behind (and you will have them) The very nature of buffing will create a gloss. If your not an experienced painter it might be to much to start with. If you insist on doing it a bc/cc with a satin clear would be the way to go IMO.