When navigating to a GitHub repo the icon will change color based on the status (Green for ACTIVE, Yellow for INACTIVE, Orange for UNMAINTAINED, Red for ABANDONED).
This is by no means the one true indicator of a repository's activity and/or "quality". It simply serves my need of quickly filtering out inactive repositories. If you have a similar need, be my guest.
The threshold for these is currently preset but I plan on making them customizable.
