A bright spot among the new art shows might be "The Magic of Neon," an exhibition of color photographs and sculpture, opening Monday at the American Institute of Architects Building, 1735 New York Ave. NW . . . And on Sunday, the Baltimore Museum of Art opens "The World of Grandma Moses," the first major traveling exhibition since her death more than two decades ago. It's the closest to Washington the tour of 55 folksy paintings by Anna Mary Robertson Moses will get . . . Last call for the Washington Project for the Arts' fifth annual art auction, Sunday, 7 p.m. at the Pavilion at the Old Post Office. There's a preview at WPA through Saturday of the works to be sold. Call 347-4813 . . . Poet-playwright Maya Angelou's readings are always stirring events -- she speaks at the Library of Congress' Coolidge Auditorium Saturday at 3 p.m. It's free, but tickets are required. Call 287-5494 . . . Local pop band the Young Caucasians recorded a song titled "You Know, I'd Love You If You Didn't Smoke." Then the American Cancer Society came along and adopted the tune for its Great American Smokeout campaign, which may get some national radio play for the song. The YCs appear at American University's campus tavern tonight at 9 p.m.