Crawling colors

Launch the application. Click on the colored buttons to place or remove colored circles on the canvas. You can do this at any time. Drag circles around the canvas with your fingers. You can do this at any time. Click the button to the right of the slider to turn off pause. Tilt the phone and the circles will begin to slide in the direction of the tilt, leaving behind colored trails. By changing the direction of tilting the phone, control the movement of the circles. If the angle of the phone is small, the circles will not slide across the canvas. Use the slider to change the width of the color trails. Click on the left button in the top row to erase lines from the canvas. Click on the right button in the top row if you want to return the circles to their original positions.