You can change the color and size of the brush on the side panel and the color of the background too, the pen changes size depending on how fast your mouse is moving if you click the mirror in the bottom right corner to enable the symmetry tool. After using the eraser you can click the 'past color' button to set the color to what you had before.
Meeeee Also i kind of forgot about this project i made it like a trillion years ago, and the eraser doesn't always work sorry
