When I purchased my used 1998 Gibson L5 CES, I noticed a few dings and dangs that I wanted to cover up or fix or remove. The seller suggested I go to Stewart-MacDonald online and buy an amber ColorTone marker to touch up the scratches and dings to help make them disappear:
ColorTone Touch-up Markers are supplied in traditional sunburst colors that match the ColorTone Aerosol Guitar Lacquers: Vintage Amber, Cherry Red, Red Mahogany, and Tobacco Brown. They are in a permanent marker (solvent) base and are compatible with all ColorTone solvent and nitrocellulos products. They are intended for touching up a variety of finish problems where the color has been lightened or removed from the instrument’s surface. This can be on an instrument in the finishing process, or any guitar that has been dinged or whose color has been abraded off.