Studio Aiello typically hosts big, unwieldy group shows in its big, unwieldy building, and only rarely presents solos. That's surely because few artists have enough work to fill it. But Boulder painter Virginia Maitland came up with enough to cram the gallery -- and its storage room -- to capacity. Opened Windows charted Maitland's career of more than thirty years, revealing how she went into, then out of, her signature color-field style. Though there's usually a grungy quality to Studio Aiello, Maitland's work made it look like a little museum.