I've requested this feature because of the bright color scheme OSX already provides. On top of that I prefer black on white. I've seen in the package that the UI is composed of many little images so I assume, that it won't be that hard to implement an alternative color scheme for OSX. Using arbitrary color schemes from TM is very nice (I could throw in my variant of Tango without hassle) but changing colors of the rest of the UI would render the image as complete.
Ideas
For the side panel, it's much harder, because need to make sexy gradient and effects. Better to change it in theme. In this case - see upper, we already have an idea:
http://sublimetext.userecho.com/feedback/19274-theming-of-the-sidebar/
Using arbitrary color schemes from TM is very nice (I could throw in my variant of Tango without hassle) but changing colors of the rest of the UI would render the image as complete.