Nautilus file manager (main window) doesn’t show/use window themes… 
even when set a theme with gnome tweak tool
but dialog windows and other programs show window themes correctly 
(see image)
maybe there’s a way to set this but i don’t know…
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http://s30.postimg.org/ncnmfkp8d/screenshot_25_07_2014_03_32_26.jpg](http://postimg.org/image/ncnmfkp8d/)
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made a bug-report for this here
…
From reading Ubuntu guys talk about it, it’s a “feature” in the Nautilus browser which they now consider a “complete catastrophe”.
Have you considered using the Cinnamon’s “Nemo” file manager? It looks like this (taken from a VM in which I just installed GNOME and Nemo to look at it, hehe)
http://i.imgur.com/5iJkfJT.jpg
Or Cinnamon in general.
Well, that’s client-side window decorations for you, which GNOME chose to implement/use/force.
Here’s how it looks in KDE: (kwin ignores CSD and shows its own window decoration anyway)
http://wstaw.org/m/2014/07/30/nautilus.png
But this causes a lot of headache for KDE as well, especially in combination with the newer GNOME 3.12.
The KDE developers filed a lot of bugs against GNOME already because of this.
See here f.e. for a discussion about this:
http://lists.kde.org/?l=kde-core-devel&m=139945056904742&w=2
Here’s a blog post from one of the main kwin developers from 2010 already about this:
maybe there’s a way to set this but i don’t know…
AFAIK, there isn’t.
made a bug-report for this here
I suppose you should better report this to GNOME directly.
This is no openSUSE-specific issue.
