The NFL has very strict uniform codes.
Pittsburgh Steelers players Cameron Heyward and DeAngelo Williams both found out the hard way, when the league fined Heyward for paying tribute to his late father with a message on his eye black and threatened to fine Williams if he wore pink accessories outside the month of October to honor his late mother.
You may be wondering if there’s anything at all players are allowed to express while on the field. After an in-depth Extra Mustard investigation, we have discovered the NFL has an approved list of eye black messages. Here are some things players can say on the field, as modeled by Heyward: