45ACP

Has anybody had any luck with painting you're box covers and surrounding plastic? I've got a 2005 2500 and my cladding was painted when I got her and that's all good but,my box cover and valance( that's what I'm calling it) is getting grayer by the day. I tried Solution finish and I have to say, Horse****!!! alot of time and money wasted. Any ideas for a proper paint? Second question, am I right in calling my Avy a first generation? And yes it's an 8.1.....and I bought it for Smileage not mileage! Take care AVY family.