Geometrically speaking, a rainbow is actually a circle that only appears to be an arch because of the horizon line. If the earth did not block our view of the rainbow, it would appear as a full ring – much like the subject of these paintings. Each of the canvases features a circular band of colours that progresses from red through orange and yellow to green, blue, and indigo – the tones that make up the prismatic spectrum. In contrast to the black background that dominates the majority of the circular canvases, the circular rainbows, like the ephemeral phenomenon that inspired them, seem almost to be made of light.