Installing the theme Gnome Cupertino
cd /tmp && wget http://gnome-look.org/CONTENT/content-files/165104-Gnome-Cupertino.tar.gz && tar -xvf 165104-Gnome-Cupertino.tar.gz sudo mv Gnome-Cupertino /usr/share/themes
After installation, open appearance and activate the theme:
But after you activate the theme, the window frame remains the same.
To fix this you need to install the Configurator system files - Editor dconf, which is the program Manager or run the following command in the terminal:
sudo apt install dconf-tools
After installation, open from the menu dconf Editor, go to the following address: org/gnome/desktop/wm/preferences and in the line theme, change the name of the theme on Gnome-Cupertino:
Now the window frames should vary according to the installed and activated the theme Gnome Cupertino.
P.S. Here in the dconf Editor, under preferences-line button-layout you can change the location of the buttons control the window from right to left, and their order is: close,minimize,maximize.