My IPvFoo extension has a similar ability: https://github.com/pmarks-net/ipvfoo https://github.com/pmarks-net/ipvfoo When viewing the popup window, each domai

My IPvFoo extension has a similar ability: https://github.com/pmarks-net/ipvfoo https://github.com/pmarks-net/ipvfoo When viewing the popup window, each domain gets a yellow highlight if a connection is currently open. The feature was introduced in 2012: https://github.com/pmarks-net/ipvfoo/commit/d09c68219cb970c1b6cc9e953482a717a37f55f1 https://github.com/pmarks-net/ipvfoo/commit/d09c68219cb970c1...