When sketching in the model, it may be prudent to color the sketch to better reflect real-life scenarios. However, when in the drawing module, the colors remain. This can cause am issue where there are multiple colors on the screen and some of them are contrasting poorly with the background. This can make it hard to work. It would be great to have the color of the sketches match the color of the geometry lines (black on white, white on black... etc).
