This is still broken in the SE 2013 release.
I think there is some confusion as well: I was under the impression that selected means the tab of the window you're currently working in, and unselected means the tabs of other windows. However, I see that there is an active setting, and that one alters the tab of the window you're working in. That makes sense: it is the active tab.
But... what is selected and unselected, then? Changing the unselected setting appears to do nothing, and changing the selected setting affects the tab of the windows you're not working in (i.e. what I would call the unselected tab).
Any chance of resolving this, or at least explaining what they mean?