Classy-V2 (Folders) was created by Gurato for his personal use. Classy-V2_alu-grey is a port for GNOME.
The folders are hosted by a mixture of icons ubuntu-mono. Some of the devices icons are from iNiZe: http://nize2ace.deviantart.com
I apologize if I forget to give credit to someone.
Download and extract the zip folder, inside there is the tar.bz2, right click on a free place on your desktop and then choose "change background" from the up Menu then go to "themes" and just take it from your desktop into this window. This will install the icons.
To view your icons in root, just write this in your shell:
sudo ln -s /home/your_name/.icons /root/.icons