Reduce Gnome 3 title bar width

To reduce the Gnome 3 massive title bar width on windows do the following.

Open a terminal and run the following command (You might need to alter it, if you're not using the standard theme):

 sudo sed -i "/title_vertical_pad/s/value=\"[0-9]\{1,2\}\"/value=\"0\"/g" /usr/share/themes/Adwaita/metacity-1/metacity-theme-3.xml  

Then either reboot or press ALT+F2, type r and press enter.

Voila, much nicer top bar size (in my opinion).