Silent Night iTunes 10 is a beautiful theme that allows you to quickly give a dark, somber look to your iTunes.
To install the Silent Night iTunes 10 theme navigate to your iTunes application, press right click and choose Contents from the contextual menu. In the Resources folder you will be able to find the iTunes.rsrc file.
Backup the file in case you want to restore the default theme and then place the .rsrc file included in the Silent Night iTunes 10 package in the Resources folder. When you launch iTunes you will be able to see the new theme.