Big shout out to Ethan Schoonover over at http://ethanschoonover.com/solarized for the color theme pallet. Although he doesn’t offer a Dreamweaver code coloring theme i’ve generated a colors.xml file based on his color pallet for your download here.
Depending if you’re using windows or mac will depend on where you put this file.
Once you locate the dreamweaver config folder here’s where the code coloring file goes:
Dreamweaver CS5 > en_US> Configuration > CodeColoring
Rename your existing one, and drop this one in it’s place.