Change syntax window background colour

Hey!

The new MonoDevelop update that came with 4.3 has changed my window backgrounds or the text (I can't remember what it was like before) so I can no longer read the information.

In syntax Highlighting what do I need to change so that the background (for the popup window) is a different colour. Or do I need to change the text colour itself?

Please excuse my lack of knowledge in the names of these things. If you could help me out with what you normally call the "popup window" and the information that would be very helpful.

See the image bellow for an example of what I'm experiencing.

Thanks for your time!