VS2012 Syntax highlighting completely broken

Hey all,

I have a problem with syntax highlighting in visual studio 2012 and C++. I've had this problem since I installed 2012 yesterday.

As you can see from below, the colours are completely messed up; some keywords such as int aren't properly highlighted, the grey return value is completely broken on various texts, the class colours have merged with various texts etc.

I've done the usual stuff found from google but had zero success, such as;

Reset intellisence from %appdata%

Reset user settings via command prompt or from Tools -> Import & Export settings

Turned off hardware acceleration.

This does not happen in Visual Studio 2010.

Any help would be appreciated, thanks.