This was my just my little experimental project with the pen. Use A and D to change the color. Use Z and C to change the size. And Use Q and E to change the background. Hope you enjoy messing around with it! It the love it button! Color 0=eraser 1=red 2=yellow 3=blue 4=orange 5=light green 6=light blue 7=pink 8=black 9=brown 10=gray 11=peach