This is a drawing game, you can change the Size, Saturation, and Transparency with the slider variables. In the top right corner, there are skin colors (the brown ones, you can also use for hair). Under the skin colors, there are "Shade" and "Brighten" buttons, if you click on "Shade" it'll change the darkness by 5, you can keep pressing it and making a color darker, and darker, the "Brighten" button does the opposite, it brightens a color. At the bottom, there are more colors, and an eraser, click on the colors to change your color to them and click on the eraser to erase. Press space to change the background color.