Artificial chameleon skin changing colors (IMAGE) Cell Press Caption This image shows the color change of the "chameleon skin" hydrogel-based chemosensor in response to biogenic volatile amine vapors, which are a well known indicator of fish and shrimp spoilage. Credit Lu et al./Cell Reports Physical Science Usage Restrictions Credit required 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.