I've been using a Visual Studio colour scheme / theme at work called Adobe Edge Code for C# development. It's grown on me somewhat so I decided to try and port it to Netbeans for some Java development. You can view the original theme at http://studiostyl.es/schemes/adobe-edge-code.
It's not an exact port (I didn't really like the orange), and it's only tweaked for Java, but I thought I would share what I have so far. It's based off the default Netbeans colour scheme so there might be some leftovers from that.
If you have any suggestions don't hesitate to make them, and if you decide to modify the theme to be more complete and useful feel free to let me know :). I'll post any updates here (with full credit of course).
In Netbeans, open Tools -> Options -> Fonts & Colors. Click Import and browse for the zip file. Restart Netbeans.
NOTE: If you are paranoid you should probably first export all your Netbeans settings to be safe.