NEW YORK (AP) With help from three prominent artists, Stephen Colbert has retouched a self-portrait to please the discerning art collector eye of Steve Martin.

Martin was Colbert’s guest on Wednesday on “The Colbert Report,” where he was promoting his new novel, “An Object of Beauty.”

Colbert presented an old self-portrait and trotted out three unannounced guests to give their appraisal: artists Frank Stella, Shepard Fairey and Andres Serrano.

Fairey and Serrano added their own touches to the painting to depict Colbert as a fascist tyrant. Martin remained a reluctant buyer until Colbert added Martin’s face to the painting, by which point Martin finally pronounced “Sold!”