Thoughts on providing visual prompts

I wonder if you have any thoughts on providing visual prompts to the browser "Allow/Deny" buttons?

A lot of the time you might execute a video call in the middle of the page but there is no real visual cue to tell the user that a new drop down has clicked that they need to click on.

Could this be part of this library/shim or does it need to be a separate project?

An example of how this could work is an overlay over the page with a prompt to tell the user to click Allow (or whatever that browsers behavior is)