Build your own theme[Click image to see full-size]
The RC build of Windows 7 includes the seven Aero themes shown here. You can build your own easily, by mixing the four items from the bottom of the dialog box and then clicking the Save Theme link. The support for multiple desktop backgrounds (changing at timed intervals) lets you build a personalized theme using favorite photos.
This gallery is a companion piece for my in-depth review of Windows 7 based on the final release candidate. Be sure to read "What to expect from Windows 7" to get the full story.