I think every painting should be the same size and the same color so they're all interchangeable and nobody thinks they have a better painting or a worse painting.... Besides even when the subject is different, people want the same painting.
                                                                                    
                                        
                                        
                                        
                                        
                                                                                
                                            
                                                
                                                    
                                                         Andy Warhol (2014). “The Philosophy of Andy Warhol: From A to B and Back Again”, p.162, Houghton Mifflin Harcourt