Improve visual indication of active port forward
In the Port Forwarding tab, the only indication that a port forward is active is that the circle changes from light grey to dark blue. These colours are so similar that it's not at all obvious. It would be clearer if it changed a more suggestive colour (green?) or even have a little connected icon next to it.
It's just a minor thing, but would help Termius newbies like me understand what it's doing.