why are they wearing all white on college gameday

The reason they are wearing all white on college gameday is to honor and participate in Penn State's annual "White Out" tradition. This tradition, which started in 2004, involves fans at Beaver Stadium dressing in all white to create a unified and intimidating atmosphere for visiting teams. On this special game day, the ESPN College GameDay crew also wears white to visually connect with the massive sea of white in the stadium and to pay respect to the home team’s fan tradition. The White Out game is known for its loud, intense environment and is one of college football’s most iconic fan experiences, aimed at boosting home-field advantage by creating a striking visual effect and intimidating opponents.