I suggest finding ways of improving the Theme Designer. Here are some ideas:

  • Make the main text color customizable. The default is dark grey, and some wikis prefer black, because it's easier to read.
  • Make the hover background on the dropdown links and the global links customizable.
  • Add more color choices to the customization, because most people don't know hex code.

This would make a lot of administrators happy, especially after all the hard work they put into their css was lost. Please add any other ideas you may have.