Here's what I did:
sudo add-apt-repository ppa:noobslab/themes sudo apt-get update sudo apt-get install arc-theme
sudo add-apt-repository ppa:noobslab/icons sudo apt-get update sudo apt-get install arc-icons
Switched theme and icon using Unity Tweak Tool (I have since uninstalled this because I thought it was causing conflict or something with Gnome) and Gnome Tweak Tool.
I tried the stuff I found online such as:
$ dconf reset -f /org/compiz/ $ setsid unity
$ compiz --replace
Which is really weird because only one icon pack is working, Numix Circle, the rest are not working at all..