Painter and sculptor Ellsworth Kelly liked to emphasize abstract shapes and bright colors. His work came to define the hard-edge painting style that originated on the West Coast but made its way east into Kelly's Spencertown, New York.
Fortunately for us, the United States Postal Service has issued a set of his artworks as forever stamps. Keep your eyes on the USPS website for availability.
“I have worked to free shape from its ground, and then to work the shape so that it has a definite relationship to the space around it; so that it has a clarity and a measure within itself of its parts (angles, curves, edges and mass); and so that, with color and tonality, the shape finds its own space and always demands its freedom and separateness.”Ellsworth Kelly