GUI Scripting: SystemUIServer

Hello, I would like to control the menu extras with GUI Scripting. Unfortunatly, I couldn’t find them using PreFab’s UI Browser. With Apple’s UI Inspector, I found that they were from the SystemUIServer. I could lock onto a menu item such as “256 Colors” in the “Displays” menu, and click the Perform Action button in UI Inspector and that would work, but I couldn’t figure out how to write the code. And I couldn’t get this to work with the iChat menu. Both the “Displays” and “Script” menu worked fine. Anyone know how to access this from PreFab’s UI Browser or know how to write the code for the SystemUIServer process? Thanks a bunch.