Which team's mascot is named "Blitz"?

What are the primary colors of the Denver Broncos? What are the primary colors of the Cleveland Browns? What are the primary colors of the Minnesota Vikings? What are the primary colors of the Chicago Bears? Which team is nicknamed the "Big Blue"? Which team is often called "Gang Green"? Which team's fight song is "Hail to the Redskins" (now "Hail to the Commanders")? Which NFL team's fight song is "Fly, Eagles Fly"?