Conversation so far:
what do the colors of the pittsburgh steelers mean
The colors black and gold are also representative of the two ingredients to create steel, coal and iron ore.
what was the original colors of the pittsburgh steelers
Originally, the team wore gold colored helmets and black jerseys.
is there any other team that wore gold and black besides the pittsburgh steelers
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.

Question: what is the logo
Self-contained rewrite: what is the logo of the pittsburgh steelers