Exceeding Expectations for High-Quality Metal Finishes Since 1945. A quality finish shows your customers that you take pride in your products. At Light Metals Coloring (LMC), our goal is to create that finish, so you can offer your clients the value they deserve. For over 75 years, we’ve provided businesses in a wide range of industries with high-quality finishing services and responsive support. We’re committed to fostering lasting relationships with our customers, so we can continue to provide the effective metal finishing solutions they need.