OT:Dreamweaver color theme editor
I created a Dreamweaver color theme editor which lets you edit code coloring- you can use it to download a dark theme, the default theme, or create your own! You can start with the default theme or a dark theme I made.
You can edit 18 different colors, and then download an xml file that replaces the current one. It takes care of all the redundant color settings that you would have to set in preferences (There are 212!).
It also has instructions for how to install the theme or restore your default theme.
Try it out!
http://inorganik.net/dw-color-theme-editor
Full disclosure, I have used it with no problems in Dreamweaver CS5.5 but have not tested it in CS6. I'd love to hear how it works.