The publication in 1977 of Ul de Rico's first book, "The Rainbow Goblins," introduced us to an artist whose spectacular use of color was astonishing and joyful. He used his unique skills to tell a tale that has had the lasting power of legend: the overwhelming defeat of the seven goblins of the spectrum who sought to take over the colors of the rainbow. Now almost twenty years later, Ul de Rico offers us the complementary tale of the eighth goblin,...