Pixelgreen – Free Drupal Theme
Pixelgreen is a simple design, it’s clean, uses light colors, and is very easy on the eyes. This theme is based on the identically named template by styleshout.com.
Web Application | Free Drupal Theme
This very clean web2.0 theme is a generic theme that can be used for many different websites. The theme is predominantly white with red accents and a green subheader, though using theme options you can easily loose the subheader. Conform the GPL license terms you may use this theme for commercial and non-commercial sites without any limitations.
SandTiger : Free Drupal Theme
SandTiger is a bright and cheery theme, with colors reminiscent of a popular fast food chain – but the red and yellow hasn’t seemed to hurt them in the least.
The XHTML validates to Strict, and it’s been tested with Firefox 2/3, IE, Safari and Opera. Those with some CSS know-how might not find it too hard to tweak, either.
Amity Island : Free Drupal Theme
Amity Island is a fixed width theme with collapsible right and left sidebars, six user regions and one level of Suckerfish dropdowns. We’ve included a Pngfix, too, for transparency support in IE6. Currently it’s only compatible with 5.x.