I like the colors Xcode uses for syntax highlighting, so I decided to create a new color scheme for MonoDevelop with the same colors. There are some diffrences how Xcode and MonoDevelop allows you to change the colors, but it’s still quite close to the original.
Download: XCode color scheme
To use it, open MonoDevelop preferences. Navigate to Syntax highlighting and add the downloaded scheme by clikcing the Add button. After that you of course select it. :) If you want MonoDevelop to look even more XCode you can change the editor font to Menlo reqular 11pt.