Monochrome is using different shades of the same color. These two were probably studies for that very purpose. They have a dated quality about them. The looseness and broad paint strokes give the reflections excitement.
Still Life in Monochrome, Oil on Canvas, Framed, Signed by Burg, Courtesy of Peter Burg
Still Life in Monochrome, Oil on Masonite, Framed, Unsigned by Dick Burg, Courtesy of Peter Burg.