The exhibition currently on view at the Taft Museum of Art, The Chemistry of Color: The Sorgenti Collection of African American Art, highlights some of the key artists in the Pennsylvania Academy of Fine Arts — Saar, Faith Ringgold, Howerdina Pindell, Sam Gilliam, Beverly Buchanan and Romare Bearden, as well as artist Jacob Lawrence himself. The range of work is broad, but the time period is narrow. Through Nov. 1.