need help with gnome shell settings

[Baldrick_NZ]

I have a few questions that I'm hoping you guys can help with.

1/ Having installed gnome-shell (3.4 according to synaptic) and gnome tweak, I can change the window and GTK theme but not the Shell theme, as in the pic. How can I change this?

2/ How do I install gnome shell extensions?

3/ How can I add Shutdown to the settings menu?

Cheers.

[Cheesemill]

You can install extensions by going to https://extensions.gnome.org/

I then use the Alternative Status Menu (https://extensions.gnome.org/extension/5/alternative-status-menu/) extension to add Shutdown to the settings menu.