Separate two Projekts by using different color of Intellij toolbar

I have the same project checked out from git two times. This is to switch without commiting a running feature. Thus, I open two instances of Intellij for the same project but in different folders. 

Is it possible to have some indication in which project I am currently working? For example, set a different color of the toolbar of Intellij for each folder. Like saving the color property to the folder and add it to git.ignore.