BluVision is a 2-column, bluish theme to give your blog an attractive look.
Dark Green is a 2-column, widget-ready theme with three different colors options (blue, read, and green).
Grady is a 2-column, widget-ready theme that is Lightbox-enabled and provides support for a few additional plugins.
Pop Blue is a 3-column, lightweight theme that has been expanded from it’s 2-column counterpart.
Simple Foundation is a 2-column, widget-ready theme with a minimalistic design.