Posted at The Revit Clinic
A new hotfix has just been released for Revit 2011 products.Hotfix – Black Preview Swatch is now available for download. The new hotfix corrects a black preview swatch in the Initial Color Dialog and helps to reduce the occurrence in some Language Formats where aspects of the User Interface fills the application window after accessing the initial color dialog.
Make sure to apply Update Release 2 before applying the hotfix and check out theRead me. If you have the UI problem you can fix it by Resetting your Revit User Interface. After applying the hotfix, you should not need to reset the UI again.