Shop for Paint at The Home Depot. Klean-Strip Green Safer Paint Thinner is a revolutionary formula with a milky-white color and can be used to thin any color of oil-based paint, stain, and varnish without affecting the color of the dried paint. Its low odor makes it great for indoor use, and itâ€ s non-flammable and less harsh on the skin than regular paint thinner. It's effective at removing grease and dirt from metal, plastic, wood and painted surfaces so paint will adhere. It will also clean paint from nylon brushes, pans, buckets, rollers, stirring tools, foam applicators and spray equipment.