Audiences have been taking film color for granted since Dorothy left Kansas. And to many a casual moviegoer, gingham-clad Judy Garland peaking out of that sepia-toned house into a bright and verdant Oz might seem like the first—and last—big leap forward. But in reality, film color experts have been making strides toward bringing lifelike hues to the silver screen long before and after Dorothy started walking around in those ruby slippers.