Painted floors used to be a big no-no in decorating, but in the last few years they've been showing up everywhere. For very little money, you can cover flaws and add color to a room. White painted floors reflect light and work well in both farmhouses and modern spaces (like this image from Domino). Dark floors can bring drama to a space. We found a great set of how-to instructions for painting wood floors on Cottage Living's website. The article gives instructions for creating a checkerboard pattern, but they can be applied to simple one-color floors as well. The jist of any floor-painting project is to: • Sand floors before painting with an industrial floor-sander. • Sweep and vacuum to remove dust. • Apply one coat of primer. • Apply two coats of paint (exterior paint is more durable). • If you want a high-gloss look, seal it with polyurethane. To go green with your painted floor project, use low or no-voc paints and a low-voc polyurethane. Chicago's Greenmaker Building Supply has a good selection of eco-friendly paints and polyurethanes.