Slider on the left controls size of brush. Arrow keys move brush. Press 1 for Red, 2 for Orange, 3 for Yellow, 4 for Green, 5 for Light Blue, 6 for Blue, 7 for Purple, 8 for Magenta, and 9 for Eraser. Press 0 to toggle brush on and off. Q and A to adjust brush brightness. (Displayed in lower left corner) Hold down Z to move the brush faster. Scratch, unfortunately, makes it very difficult to put many different shades of gray as pen color, for white cannot be shaded without changing color.
I am aware something like this already exists, but I started making this project before I found the others. I find this, however, more precise for making art. There appears to be more tools in my version. I program and drew all this myself.
