[Tx Firefighter]

The best way to make it look good and last a long time is to use flattened black paint or flattened clear coat over black base coat.

I painted my car with flattened PPG clear coat over orange base coat years ago and it still looks as good now as it did on day 1.

Primer will get ugly when exposed to weather day in and day out, so you need to use some type of a paint as a topcoat.

The flattening agent is available from your paint jobber. Just ask for it and they should have it on the shelf somewhere. Follow the directions the manufacturer has and you'll get good results.

As another option, several cheaper paint products are available like John Deere tractor flat black. Don't expect the same long term durability from the cheaper route though.