Industrial paints are pigmented liquids or powders that are used to protect and/or beautify substrates. They typically include a resin, a solvent, additives, pigments and, in some cases, a diluent. Solvent-based paints contain volatile organic compounds (VOCs) as the carrier. Water-based paints contain mostly water, but also chemicals such as glycol ethers and alcohols as the carrier. Some industrial paints are applied with brushes or rollers. Others are applied with spray systems. Colors vary widely and include black, blue, brown, gray, green, orange, purple, red, white, and yellow. Primers and finishes such as flat, satin, semi-gloss, and high-gloss are available. Substrates for industrial paints include asphalt, ceramic, concrete and masonry, fabric and fiber, fiberglass, glass, graphic, metal, paper and paperboard, plastic, rubber and elastomer, and wood.