I installed gnome tweak tool, and am trying to set up custom themes and whatnot. So, trying to install gnome-shell-extensions-user-theme.

me@computer:~$ sudo apt-get install gnome-shell-extensions-user-theme
[sudo] password for me: 
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Some packages could not be installed. This may mean that you have
requested an impossible situation or if you are using the unstable
distribution that some required packages have not yet been created
or been moved out of Incoming.
The following information may help to resolve the situation:

The following packages have unmet dependencies:
 gnome-shell-extensions-user-theme : Depends: gnome-shell-extensions-common but it is not going to be installed
E: Unable to correct problems, you have held broken packages.

Not going to be installed? Okay, let's see about that...

me@computer:~$ sudo apt-get install gnome-shell-extensions-common
Reading package lists... Done
Building dependency tree       
Reading state information... Done
gnome-shell-extensions-common is already the newest version.
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.

Wait, what? Broken packages? Ruh Roh! Seems to me it might be a PPA contradiction problem or something, but I'm tired of trashing my installs. Kinda lost here. Any ideas?

Output of sudo apt-get install -f

drex@U110:~$ sudo apt-get install -f
Reading package lists... Done
Building dependency tree       
Reading state information... Done
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.