User blog comment:Dopp/Technical Update: November 15, 2011/@comment-3235402-20111116142124/@comment-1091639-20111116143741

You can customize both the Dashboard and the new editor any way you want using site CSS pages. The fact that the colors are 'fixed' is an inconvenience, I agree, but I wouldn't go so far as to calling it "completely ridiculous", especially since the new dark theme has been introduced after countless community requests, including mine.