I have painted a number of the panels and have found it to be pretty easy.
1 rough up with scotch pad
2 clean with soap and water, dry with let free cloth.
3 Light coat of adhesive adder by Bully dog
4 spray paint in coats to match.
5 then add clear coat 2 coats.
Rubbing compound to smooth clear coat.
Even I was able to do it, you can get every thing you will need from Colorite. com
All you will need is the color code and that's it my friend.
Just take your time.