“It's an homage to the passing of the incandesent light bulb,” says artist Keith Greco of his installation of twelve giant lampshades of different, classic styles, all warm white, all lit from within by a 200-watt bulb. The lamps light the way to the DoLab stage, giving inviting illumination at night while evoking the somewhat comic effect of bringing the indoors out, on a huge scale. Greco is the artist who created last year's installation of house varieties — modern, popsicle stick, gingerbread, and so forth — and his talent lies in creating environments with a specific mood. The familiarity of the classic lampshade styles — like something you'd see in any number of typical American homes — is juxtaposed with an unfamiliar setting and scale, a push-pull between comforting and startling.