I've had many requests for "dynamic themes" (themes that change at different times).   Here are the first two themes that I am testing. Thanks so much to David Cox, BlueQuoll, who helped me by putting these themes together to make them dynamic.

To see how the theme looks on your homepage, click on the link below the photo and the theme will pop up.   (You must be signed into your iGoogle homepage).  If you want to keep the theme, either copy the link in your browser and paste it into your homepage, or if you are using Internet Explorer, click on the tab by your homepage icon and select "add or change homepage", and then select the option you want. With Firefox, select tools, options, and click "use current page".  If you don't want to keep the theme, click the back button and it will take you back to the theme list.  All themes are designed for screens up to 1680 resolution unless noted.

Sunrises and Sunsets
Themes Shown are Monday Through Sunday, Left to Right
  (To preview each day's theme, click the link on each photo)

Lakes and Streams
Features Twelve "Serenity" Themes That Change Hourly
(To preview each theme, click the link on each photo)