My new JAG center foot panels were first.
I used dish washing soap and cleaned the parts thoroughly and immediately dried them off.
I used a good quality spray primer; the first two coats are Krylon grey.
The next two will be Krylon white.
A trick I learned when you are done spraying is to turn the can over and spray till no paint comes out. That way your nozzle will spray like new every time.
When you get close to having a quarter of a can left use it on surfaces that wont be seen as to avoid getting splatter near the end of the can on surfaces you want to look smooth.