This is especially obvious in a gallery of the Museum of Contemporary Art, Los Angeles (above). The objects in this room (part of the exhibition of the permanent collection) are all monochromatic, a unifying factor across the media of painting, metal sculpture, wood sculpture, and photography. What's more, the compositions of all the larger works have a strong vertical element: the paintings send up powerful black brushstrokes, while the two sculptures point long fingers skyward. The viewer's eye bounces from one to the next, drawing her in for a closer look into the black-and-white vortex.