Use of Metal and Other Substrates Metal has an inherent beauty that suggests strength and dependability and may be used to render the Cummins logo without the use of additional color . Metallic applications include cab plates, grille badges, product badges and decals, belt buckles, lapel pins and commemorative coins . When using metallic finishes, silver is preferred over gold, brass, copper or bronze . Plastic made to look like metal and other reproduction methods that appear metallic is also acceptable . Acceptable methods for rendering the logo are etching on glass or stone, embossing or debossing leather, and etching or carving the logo into stone or wood . Creating the logo in flowers, ice, chocolate or other food is not prohibited . Cummins Brand Basics 18