Accomodate for people with colour blindness
One of my colleagues has colour blindness.
The distinction between a non-reviewed database (the grey circle) and a database with outstanding changes (blue / white icon) is difficult to see because of the fact that the icons are so small (the less pixels to compare, the harder it is by all accounts) and often can be far away (i.e. if there are other non-source controlled database between them on the database tree in SSMS).
It would be helpful to make a clear distinction between the icons - either make the grey icon a flat colour (i.e. remove the highlight within it) or to slightly change the shape of one the icons.