Surfboard-coloring method using water-soluble acrylic paints sprayed in a mist through a handheld, air-pressurized nozzle. Airbrushing—also known as airspraying—is usually done directly onto the board's foam core, prior to fiberglassing; it can also be applied in between the sanding coat of resin and the gloss coat. Airbrush designs range from clean and simple to wildly extravagant; the process adds between $35 and $200 to the board's retail cost. Some airbrush work is done freehand, but gene...