About This Project Most people are surprised to learn that professional painters use soft colored putty to fill nail holes in stained woodwork. This eliminates the nearly impossible job of staining wood filler to match the surrounding wood. Several colors are available. To get an exact match, you may have to blend two colors. You can even use two or three colors on the same piece of wood to match areas of light and dark wood grain exactly. Colored putty is available at paint stores, hardware stores and home centers for about $2 per container.