VideoPaint

With VideoPaint you can paint colorful pictures with your camera, using the world as your brush. Select from six different palettes that provide automatically changing colors. Save your paintings and share them with your friends. Choose from a variety of effects.

From the main screen, you can:
 - Pause the painting in progress and resume painting.
 - Clear the screen (to the opposite of the current paint color).
 - Save the current picture. Use Android’s Gallery to view and share your paintings (in the VideoPaint folder).
 - Adjust the sensitivity

From the options menu you can:
 - Select slow or fast color changing.
 - Select shaded or solid colors.
 - Go to the next color palette.
 - Paint with objects that are either lighter or darker than the background.
 - Select either the front or back camera

For best results, start with the sensitivity slider somewhere near the middle. Choose whether you want to paint with dark objects or with light ones. Adjust the sensitivity up or down until only the objects of interest leave trails when moved.