Georgia O'Keeffe depicted this entity "above clouds" in a series of paintings.  
Louis Nevelson's painted relief sculptures include a "Shovel" and a "Cathedral" modified by this word.  A gigantic bare-chested woman embraces a blue head surrounded by a bird, a bouquet, and a donkey's head in a Chagall work titled "Lovers in the Red" one of these.  Georgia O'Keeffe depicted this entity "above clouds" in a series of paintings.  It contains splotches of pink and horizontal bands of red and yellow in J.M.W. Turner's The Slave Ship, while another notable depiction of this entity is of the tempestuous one dominated by whites and blues in El Greco's View of Toledo.  For 10 points, name this entity which is depicted as swirling and full of stars in Van Gogh's Starry Night.
Louis Nevelson's painted relief sculptures include a "Shovel" and a "Cathedral" modified by this word.  
the {sky} [accept reasonable equivalents]