Can you change IntelliJ colors on per project basis?

Question

I often have 2-4 projects open at the same time in IntelliJ IDEA 15. It quickly becomes confusing switching between them, especially when classes are similarly named. Is there a

Answer 1

Another possible solution might be to create different scopes for your projects and apply custom colors. Note: I see this more as a workaround because (IMHO) scopes should be mainly used 'in-project'. The downside with this solution is that you have also to handle the build-in scopes like Test.