To change colors, Press R for red, O for orange, Y for yellow, G for green, B for Blue, P for purple, i for pink, and L for Black. Use the left and right arrow keys to change the width of the Eraser, and the up and down arrows for the Width of the Pencil. You can also change the color by pressing the "Colors" Box and clicking on your desired color. Click the eraser Image to erase the canvas, and click the "Eraser" box to access the eraser. Click the "Disable Eraser" Box to go back to a pencil.