Custom Wedding Paint Job
Wagons are sometimes used in wedding ceremonies as a cute way to bring young ring-bearers into the ceremony. If the classic red color of the wagon will clash with your wedding colors consider painting over the red with a more neutral color, a white, black or beige background, for example, and detailing over that base layer with images of flowers that match or compliment your wedding colors. Adding a sweet "Just Married" on the back will make the wagon even cuter. Radio Flyer, the manufacturer of classic kids' wagons, recommends using a high-gloss outdoor enamel spray paint for wagons with steel bodies and semi-gloss outdoor enamel spray paints for wagons with wooden bodies.
Classic Wagon Paint Job
If you don't want to decorate your wagon for a specific event like a wedding or party, but do want to customize the look and feel of the wagon, there's plenty of options available to you. A classic look might be to paint over the standard red paint job with a high-gloss black paint for a sleek and sexy feel. Leave it straight black or add a custom decal of your choosing, thin racing stripes or a colored line around the lip of the wagon to break up the black.
Hot Rod Paint Job
For a real wild custom paint job for your wagon, take a page from the book of Arnie's Artwork in Nebraska which has designed a custom hot rod Radio Flyer wagon. The base paint is a rich maroon and over that orange and yellow hot rod flames lick at the sides of the wagon. Arnie's wagon is customized beyond the paint job with stylized exhaust manifolds, a racing-style steering wheel on the wagon handle and a high-backed seat added on, but you could stop at the paint job.
Fourth of July Sailor's Wagon
For a quick and fun way to customize your wagon without having to wait for a custom paint job to dry, Disney FamilyFun recommends using cardboard and colored duct tape to make a celebratory Fourth of July wagon. Using three or four long pieces of cardboard taped together, wrap the cardboard around the wagon so that it encircles the wagon and sticks up a bit above the wagon's sides. Now, using a roll of red, a roll of white and a roll of blue duct tape, begin to wrap the cardboard using one color at a time. Start with white, then add blue then add red and soon you'll have a cute and patriotic customized wagon.