Hong Kong: Gagosian, 2015. Hardcover. Exhibition Catalogue. 13 3/4 x 10 3/4" 75pp. incl. biography. Illustrated. Substantial essay with color photographs illustrating Ruby's 10 "VIVIDS" colorful hazy-spray-painted color field paintings representing the artist's ruminations on the shifting, multihued Los Angeles skies that he encounters en route to his studio. Decorative.....