Using these stone glue colors is easy. First, take the glue you use for chip repair, lamination or seaming. Then, add the Tenax glue color little by little until you get the color that matches your stone. You have a 2.0 oz container of color at your disposal. Remember, air shipping is not available for this product. Also, the colors you see are just an estimate, so don't expect them to be exactly the same as the actual stone glue. As for maintenance, keep the container tightly closed in a cool, dry place. This will help preserve the color and keep it ready for your next project.