I have just turned on two relatively subtle changes in the default GTK+
theme that we use in F13 (and rawhide).
- Mnemonics are only shown when they are relevant, to reduce visual
clutter. I've written about this recently:
- Windows can be dragged by clicking on empty parts of menu bars.
You can see these changes in rawhide now, and in F13 once
gtk2-engines-2.19.0-2.fc13 moves into f13-updates.