When using the keyboard to reset UI Option's current settings, you cannot actually saved your reset values

http://build.fluidproject.org/infusion/integration-demos/sakai/html/ui-options-fss-sakai.html
Activate the UI Options dialog by pressing "Edit Appearance" and make some changes to the UI and save changes.
Use keyboard to re-activate the UI Options dialog and then use keyboard to navigate to reset button.

Notice that the preview window shows the reset page, but you cannot use keyboard to re-enter the dialog and save your changes.