Brush and eraser size can be changed with the slider bar on the right, or honed in with the 1(increase size) and 2(decrease size) keys. The 3 key switches between eraser and brush, and the 4 key clears the screen.

Currently, pressing the save button will produce a .png image file with your sketch in a new window – if you want to keep it, you should save that image, because it is gone once the window is closed.

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For the color, we decided to stick with white and gray – and a little simple blue thrown in for accents – muted colors that let the work take center stage. The narrow left column, tiny header, and small fonts all help to focus user attention to the main content.

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Controls are mouse click based, keep an eye on the timer – if that runs out the game is over.