On the 150th anniversary of the birth of Piet Mondrian, a controversy arises over one of the most iconic paintings: Composition with blue. And the ingredients for the story to become a yellow are all there. Dutch artist Piet Mondrian’s designated heir asks the Philadelphia Museum of Art to return a 1926 painting, claiming the work, now estimated at more than $ 100 million, was seized from a German museum and sold in New York none other than a merchant specializing in the trade of works that were censored and then stolen by the Nazis. La denuncia alla Pennsylvania Court...