KOJO GRIFFIN has guts. The guy had a good thing going: a New York gallery, collectors standing in line for his new work, and bragging rights over his inclusion in the 2000 Whitney Biennial. But he had also grown weary of the grim material in his drawings centered on anthropomorphic animals engaged in distinctly human dramas of violence, abuse, sadness, cruelty and unhappiness. Despite a family to support and ample rewards in place for consistency, Griffin wasn't content to stay the course. In recent years, he has turned away from his gripping social commentaries to embrace abstraction, politics and new tactics. His fresh turn and admirable embrace of experimentation and change is on view in Sunshine & the Rain at Saltworks Gallery Sat., NOV. 17, and through Dec. 22. Free. Sat., 11 a.m.-6 p.m. and by appointment. 635 Angier Ave. 404-876-8000. www.saltworksgallery.com.