Over his four-decade career, painter Kim MacConnel (born 1946), a pioneer of the 1970s Pattern and Decoration movement, has elicited comparisons to Picasso and Matisse for his brightly hued canvases, in which abstracted glyphs spill over into pattern. MacConnel reminds us of what every homemaker knows, Christopher Miles wrote in Artforum; that decoration denotes, connotes, and implies; that it's a channel as effective as any sign system for...