Zach Kerr walked out of a training room this week and made a beeline toward the cleats coated in a retina-burning orange perched inside his locker. “Oooooh,” Kerr squealed in about as high a pitch as a 334-pound defensive lineman can muster. “I’m hyped to play in these. I haven’t played in the color rush uniforms.” The past year has been all about new experiences for Kerr, the gregarious defensive end who is beginning to make his mark in Denver.