James Jones wore a green hoodie under his uniform for Sunday's game at the Minnesota Vikings.
"It's green, it's the right uniform colors, and it's just Cali swag, man, to keep me warm," Jones, a San Jose, California native, told NFL Media's Steve Wyche. "It's short sleeve, so hopefully I started something good, keep me warm."
The hoodie created buzz during the game.
"We might get some dudes playing in it now," he said. "That would be sweet."