Save and Switch Themes with Theme Switcher
If you’re someone who likes to give your Windows Mobile device a fresh look and alternate your themes, then check out Theme Switcher by XDA forum member Grumps.
Theme Switcher v1.6 provides the option to name and save your current Manila/Sense theme modifications and then restore them whenever you feel like it!
The app scans for all *manila files in the windows folder on your device and picks out all the files that are marked with a date that differs from the original ROM installation. These files are then backed up to a specified folder, and Theme Switcher simply lets you restore instead of having to individually reapply each custom item.
A nice touch is that Theme Switcher gives you a preview of any images before applying and also lets you exit without needing to refresh TF3D.
To download the cab and for more information, check out the application thread.