Click on the green flag and use the mouse to spin the chameleon. Press the space bar to change the colors of the chameleon. Press the s key to stop.
This project was based on the paper plate Color Changing Chameleon Craft that goes with Eric Carle's the Mixed up Chameleon.
Here is one explanation of the project: http://tippytoecrafts.blogspot.com/2012/11/colorful-chameleons.html
The colors are made on a backdrop but you could create a sprite or take a picture of a colored paper plate to use as the underside.