Still from Ana Mendieta's Silueta Sangrienta, (1975. Super-8mm film transferred to high-definition digital media, color, silent, 1:51 minutes), in her show at the Colby College Museum of Art, Waterville, Maine, through Dec. 17. The remarkably large and rich museum says the film focuses on an indent in the ground shaped like Mendieta's body. The body is first shown naked, then it disappears, and then it suddenly fills with red paint before she reappears in it face-down. The two-minute film is quite unnerving.