Hi Mark, the tricky part is that different vendors deal with widgets differently and have their own field highlighting logic. I want to make it clear that when you see the red outline in Adobe for example, that isn’t the widget color defined on it. That’s the software’s interpretation (you can even change this color in preference)
So most annotations the color fill/border color is defined by the annotation itself. But for Widgets, if Field Highlighting is turned on, then the viewer controls the colors, not the widget. That’s why here we want to work with it by overlays.
Hope this helps.