After upgrading to the latest ReSharper Ultimate version, my VS color scheme is kinda messed up. i have tried re-installing it, deleting the VC12_Config key from the registry and modify the "extensions changed file". If I suspend ReSharper my color scheme switches back to the default dark skin (which I want).
Here is what it looks like:
ReSharper on

ReSharper off

The colour scheme is not really messed up, Resharper has just added a few more colours, this is probably due to the Code Inspections (for C# anyway, I assume it is similar for C++). To disable this, go to:
Resharper->Options...->Code Inspection->Settingsand uncheck the 'Color identifiers'EDIT: The above was for C# and Resharper 8.2, for C++ and Resharper 9 the setting is here: