-Draw some points and then press "space". -Press "P" to toggle the color picker. Click on the desired color and then press "P" again to hide it. The new color takes effect after hiding the color picker. -Press "space" to start waving. If stopped the animation (by clicking the red cirdle), it continues by pressing the "space" key again. * * * * * -In order to work further on it: 1. Click the red circle to stop the program run. 2. Press "W", to enable drawing. 3. Press "P" to show or hide color chooser. 4. Make some chandes. 5. Press the 'spacebar' again to animate it.
-Scratchers, thank you very much for sharing your ideas.