You can buy cheap stick on gas door covers, but all I have seen are polished. I got one on clearance for $5 and put it on my Jimmy. It looked out of place being polished so I sprayed it black. That didn't stick for too long and I didn't expect it to because of the rivet holes and I was unable to rough up the polish very good. I sanded the whole thing to look like the brushed aluminum trim on the Jimmy. You can also buy complete bolt on fuel filler doors but they run $100 or more.