Toggle show/hide warnings on all areas? #62
Description
When/if we add different color for different area types. It would be nice to have a way to show/hide the warning colors on the areas.
Have it enabled by default so people see the warnings, but maybe have it as a layer, a toggle button, or a url query string so you can hide all warnings (yellow and red color) to see the different area types color.
Originally proposed in #47
Another approach is to fully allow colors but to have the warnings as a "layer" which temporarily restricts the visual style to three colors:
No warnings: gray
Warning 1: yellow
Warning 2: red