Comment 4 for bug 331445

I have another bug I need to try to work on first, and after that I can work on this one unless Ken is working on it.

Earlier doing a really quick grep through the sources I found something that is possibly relevant, but I didn't spend the time yet to be sure. From greeter_parser.c there is a comment that says:
      /*
       * It might be nice if we allowed this property to also supply a gtkrc file
       * that could be included in the theme. Perhaps we should check first in
       * the theme directory for a gtkrc file by the provided name and use that
       * if found.
       */