Due to the nature of the way we work, we often find ourselves with 2 or more versions of the same project open at one time in different Visual Studio sessions. Unfortunately, these are just stacked on the task bar so without going to a source code file and inspecting the path, we can't readily tell them apart.
Is there a way to apply some ad hoc styling to the IDE to be able to tell them apart more readily? Something like theme would be ideal but at a session level.
N.B. this isn't something we'd want to check into source control so we want to avoid having say, marker files in the solution.