Roy Lichtenstein proved that he could fulfill demands for a "great" composition even though his subject matter derived from comic books. In addition to using the imagery from these mass-produced picture books, Lichtenstein appropriated the techniques used to create the images in comic books to create his paintings. He not only adopted the same bright colors and clear outlines as popular art, his most innovative contribution was his use of Ben-Day dots: small dots used to render color in mass-manufactured comics. Focusing on a single panel within a comic strip, Lichtenstein's canvases are not an exact facsimile, but are rather the artist's creative re-imaging of the composition in which elements may have been added or eliminated, scale could shift, and text might be edited. By hand-painting the usually machine-generated dots, and recreating comic book scenes, Lichtenstein blurred the distinction between mass reproduction and high art.