All the works in the Composition Series are built up in layers. The first layer has the colors that will show through the additional layers. In this composition the base layer for each side of the diptych were the opposite of each other. One was a pink circle with blue border the other a blue circle with a pink border. Then I experimented with using the same pallet on the next layers across both canvases. How the viewer sees the two parts because of the differences is the essence of the composition.