Window cycling not highlighted.

[Thyname]

Fedora 30 with Xfce 4.13
Congrats for this theme, it's excellent!

It has, though, this issue that items in alt+tab aren't highlighted, so, for instance we can't use list view as there's no way to check from the alt+tab window which one is selected (except for the window frame, but it may be in another workspace). In icon view we can see which one is activated only because the title is shown under the icon.

So it's needed another colour for the selected item, just like when we hover the mouse over the window.

I'm attaching screenshots of the alt+tab window in both view modes,with and without mouse over.