I painted my sideskirts a few days ago. I got all the supplies for the at Paint World and found out how to do it from this thread. Your paint code is located on top of your driver's side strut tower.
A few things I might add about painting the sideskirts. If I were to do it again I would sand them first to get a smoother texture and I would add a few extra coats of clear coat. I would also not drop them during the drying process.