Move mouse pointer around, press and hold to draw! Press the 1, 2, 3, 4, 5, 6, 7, 8, 9, 0 keys to change color, while press the up and down arrow keys to change transparency, and press the right and left arrow keys to change size. Press the E key to erase a part of your drawing. Press the left and right arrow keys to change the size of your eraser.
Inspired by: @cs50
