It would be useful to have a Quick Reference Card or Summary Card with the definition of all of the symbols and colors. For example, in Sketch, what does a solid black, solid white or open purple point mean? In Sketch, what does an organge or black dimension line mean? In Sketch, what is the difference between a blue sketch line and a black sketch line?
This is just to name a few. BTW, I have the Preferences>Preview>"Sketch - Color sketch geometry based upon constraints" checked or turned on.
Thanks,
Mike