These things are the subject of a “sphere” used in modified form for Johannes Itten’s Preliminary Course at the Bauhaus and designed by Philipp Otto Runge (“ROON-guh”). J. M. W. Turner referenced an iconoclastic book about these things in the title of a painting that depicts the morning after the biblical flood. A triangle with nine segments that demonstrate these things is often named for Goethe (“GUR-tuh”), who used symbolic (10[1])labels like “unnecessary” in his Theory of them. Charles Blanc’s theories about these things “mixing” in the eye inspired Paul Signac (“seen-YAHK”) and Georges Seurat to develop Pointillism. (10[3])Harlequins (-5[1])and sad, lonely subjects respectively characterize two (-5[1])Picasso periods named for these things. For 10 points, name this painting element described by value, saturation, (10[1])and hue. ■END■ (10[1])