Logos and uniforms of the Pittsburgh Steelers "Steagles"; the team's colors at that time were green and white as a result of wearing Eagles uniforms. These are the colors of the city's official flag which are the colors of the city's namesake Sir William Pitt. The colors black and gold are also representative of the two ingredients to create steel, coal and iron ore. Originally, the team wore gold colored helmets and black jerseys. Unique to Pittsburgh, the Steelers' black and gold colors are now shared by all major professional teams in the city, including the Pittsburgh Pirates in baseball and the Pittsburgh Penguins in ice hockey.
Logos and uniforms of the Pittsburgh Steelers one used concurrently has a strong resemblance to the recycling symbol. One alternate variation the team used in the 1980s—though rarely used today—combined the logo with the team's signature stencil-script typeface, replacing the regular "Steelers" typeface used with the team's longtime script logo. The Steelers are the only NFL team that puts its logo on only one side of the helmet (the right side). Longtime field and equipment manager Jack Hart was instructed to do this by Art Rooney as a test to see how the logo appeared on the gold helmets; however, its popularity led the team to leave