Ultimate UI is a comprehensive UI Plugin for Ubot Studio. You must have the developer edition to use this plugin. There are more than 1,600 properties you can set and get on the main WPF controls. You can also set events, mess with the Main Window, DataGrids, custom Alerts and more. This plugin is pretty huge - even in 1.0, I actually forgot to show off some stuff in this demo and the demo doesn't cover everything - it just shows you some things.
Note: For Metro, the Controls is spelled with an uppercase "C" - sometimes in their documentation it is lowercase. You must change it for the control to work properly. Not all Metro controls and styles are supported but a lot is. If you want something specific check with me first to see if it's in there.