Heck, take the panel and match the blue in 4oz. of base coat. An airbrush like I use(the Badger 250) can be had on eBay for under 20 bucks and any fool can get good results with it(go ahead, ask me how I know).
Do the prep, shoot the paint, and after a couple hours wet sand very lightly with 1000 grit to smooth out the surface. Then take the parts to a collision shop for the clear coat over the top. I'm guessing $100 for everything and you'll never need to look at that white again.
Only fussy part is that you need the pro to shoot a two part clear coat that won't be affected by gasoline. Some clear coats can be stained by gas spills, you don't want that used, especially on the fuel tank.
