Red Drop is a red (surprisingly!) WordPress theme with drop down menus.
The screen space saved by using drop downs is used to provide a right navigation bar that varies with the page being viewed. For example when viewing a post the left nav bar shows the (titles only) of recent posts in the same category (or categories).
It is slicker than my previous themes. Doing themes is definitely fun and I will be doing more when I have the time.
You can select this theme (and my other themes) from the theme switcher drop down.
You can download Red Drop from here.