Teo Gonzalez's 16 meditative abstract paintings at Roy Boyd, which contain thousands of repeated outlined shapes with dark centers, have suggestive power, but they're also about abjuring the usual kinds of meaning in art. The centers, applied precisely with a brush, are sometimes small dots and sometimes fill almost all of a shape's borders. The grids the shapes are arranged in are typically full of curves, and there's a bit of humor in their slightly cartoony look and obsessive repetition: Untitled #258 has, according to Gonzalez, 11,581 gold marks; the smaller Untitled #273 has 4,489 black ones. But the shapes, made of acrylic enamel heavily diluted with water, are also subtly shaded, evoking transparent skin or cell walls, and the viewer who goes from one to the next can be both fascinated with small differences and aware that whether a dot is small or large or a cell circular or oblong has no special meaning, except to make us aware of the way we humans like to impute significance to natural variations in the world. Roy Boyd, 739 N. Wells, through January 6. Hours are 10 to 5:30 Tuesday through Saturday; 312-642-1606.