Most jobs require costume designers to hit the ground running, but Kym Barrett’s work often needs a backflip, some somersaults, and a few spinning kicks before the race even starts. Barrett mints icons like Apple cranks out iPhones. She hit the scene with the shockingly modern Shakespeare adaptation, Romeo + Juliet, and has not stopped sprinting since. In The Matrix series, she reimagined the superhero as an antihero with the unforgettable sweep of a black, floor-length coat and impenetrable mirrored sunglasses…