The Green Bay Packers were named after what kind of company that sponsored the team early on?

In which city are the Buccaneers based? In which city are the Steelers based? In which city are the Colts based? The Philadelphia Eagles were named in honor of what New Deal symbol? What are the primary colors of the Green Bay Packers? What are the primary colors of the Pittsburgh Steelers? What are the primary colors of the Las Vegas Raiders? What are the primary colors of the Denver Broncos?