set border color to captured screen (electron app.)

[kalpeshims]

Hello,

Screen sharing is working fine in my electron app. i can see captured screen to another browser using "DesktopCapturerSource" but i want to set border color to the selected screen or window so i can see which screen currently i am sharing to others. we can see in skype or microsoft team or other application like red border to the selected screen while screen sharing something like that i want to make.

thanks.