If you havnt picked up a spray gun before i would say dont do it, unless you really want to teach yourself how to paint.
By the time you buy all the required tools and bits and pieces it will be a little costly. Id suggest maybe rubbing the panel back abit then find a spray painter that can spray them on the side for some cash.
There is plenty of spray painters that will do it, I have been to panel shops and they have told me they wont spray the panel cause its not worth there time but walk down the back and speak to the painter and he will probally do it after work for some cash.
Cheers,
Scott