Changing the Color of Butterfly Wings (IMAGE) Yale University Caption Yale University scientists have performed the first artificial selection on a structural color, using butterfly wings. This image shows a male Bicyclus anynana butterfly, prior to the change in wing color from brown to violet. Credit Antónia Monteiro Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.