Water-soluble stain is sun-fast true-to-color and non-bleeding. Produces a clear rich color without grain clouding or smearing. Walnut Stain is a true brown-walnut color for the traditional look. Color intensity is easily controlled by adding water to concentrate or using full strength for light colored woods such as birch. – Water-soluble stain is sun-fast true-to-color and non-bleeding. – Produces a clear rich color without grain clouding or smearing.