I’m interested in finding new ways of revealing things that are kind of latent in a given image,” Hank Willis Thomas told Artsy in 2015. “I talk about my work as an archaeology in a sense, and I might consider myself a photographic archaeologist, or a visual culture archaeologist.” Thomas’s photographs are as much about examining context as they are about their subjects. What is this artist digging up now? In a new series, using theory and screen color calibration charts, Thomas investigates the racist policy of “color correction” in the years when Technicolor proliferated in Hollywood—the same years that saw desegregation in America. —E.C.