Paint metal surfaces to stop rust from starting and prevent existing rust from spreading. Scrape rusty areas clean before application. Although primer is not required for use on all materials, it can be used to prepare any surface to maximize the life and corrosion resistance of paint.

Safety-color paint comes in colors approved by OSHA to color-code safety equipment locations, physical hazards, and protective equipment. Safety green indicates general safety and is often used to identify first aid kits and other medical equipment and to explain safety procedures.