How to get a REAL global dark theme in Ubuntu Gnome 14.10?

After years (hours) of looking for an answer, unable to find a working one, I'm going to ask you.

How do I change the color of this (or any other than gnome app) to match the dark theme? I find it highly annoying, and the solution that everybody suggests (gnome shell theme) simply won't work.

I've enabled custom shell themes, but not a single shell theme that I would even consider using have changed the color of these windows.

This is what my tweak-tool looks like:

Under window (or any other than shell theme), there's nothing else but adwaita and high contrast.

Solution 1:

• Download this zip(Numix Flatstudio Dark Theme): https://www.dropbox.com/s/hvq89fo7rojpr5h/Numix-flatsudio-dark.zip?dl=0 (I have made a few changes to this to match my shell theme)

• Open terminal and type this:

  sudo chown [username] /usr/share/themes && sudo chown [username] /usr/share/icons
  

  replacing [username] with your username.

• Unzip this downloaded zip into /usr/share/themes
• Download this zip(Shell Theme): https://www.dropbox.com/s/d8ynaj6jnsktln4/Ozon.zip?dl=0
• Unzip this downloaded zip into /usr/share/themes
• Download this zip(Icon Pack): https://www.dropbox.com/s/850tkeijmraskfk/Ultra-Flat-Orange.zip?dl=0
• Unzip this downloaded zip into /usr/share/icons
• Open Tweak tool. Turn off the Global Dark Theme. There will be Numix-flatstudio-dark under the Window and the GTK+ dropdown. Select those. Under the Shell Theme dropdown, there will be Ozon-shell-master. Select this also. Select Ultra-Flat-Orange in the Icons dropdown menu.
• Now you will have a global dark theme