Multi-user 14.04
If you have only one user on your system, it will be ok to change default curser theme, whether by copying DMZ-Black contents onto DMZ-White, or changing default index.theme content, or even using command sudo update-alternatives --config x-cursor-theme
.
But on a multi-user system, you need to personalize for yourself alone without affecting other users. Well, it's not so hard. You just need to make a "default" curser theme under your home.
Let's change the cursor theme in steps:
Via Terminal
gsettings set org.gnome.desktop.interface cursor-theme "DMZ-Black"
– simply replace "DMZ-Black" with your desired theme
mkdir ~/.icons/default
gedit ~/.icons/default/index.theme
copy the following lines in the text file and save it:
[Icon Theme]
Inherits=DMZ-Black
– again replace "DMZ-Black" with your desired theme.
Via GUI
- Install Dconf Editor or Unity Tweal Tool to be able to change the cursor theme;
On Dconf Editor, search for "cursor-theme", double click it and change the value to "DMZ-Black" or your desired theme.

Alternatively on Unity Tweak Tool under Apearance, go to Cursors and select "DMZ-Black" or your desired theme.

Open Files (Nautilus) and go to ~/.icons
(make one if there isn't any);
- Make a new folder, name it
default
and open it;
- Make an empty document and name it
index.theme
;
Open the file, paste the following lines and save it:
[Icon Theme]
Inherits=DMZ-Black
You can replace "DMZ-Black" with your desired theme.

This works also on Synaptic Package Manager and Nautilus with root privileges.
Source: Raschix's comment on a post from webupd8.org 4 years ago!