Veiled Chameleon Contest over Territory (IMAGE) Arizona State University Caption When male chameleons challenge each other for territory or a female, their coloring becomes brighter and more intense. During a contest, the lizards show bright yellows, oranges, greens and turquoises. Credit Megan Best Usage Restrictions With photo caption and with this story only. 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.