How to get area value of an Polygon Annotation

WebViewer Version: 10.6

Please give a brief summary of your issue:
Changing selected ControlHandle color

Hello !

I added a feature allowing to click on a PolygonAnnotation path point, and removing it by pressing the del key.
For a better user experience, I’d like the controlHandle of the selected path point to be of a different color.

What would be the best way to achieve something like this ?

Thank you very much for your help.

Kind regards,