This is another dark SLiM (Simple Login Manager) theme. It is based off of DevilX's Splashy and Minimal-Tux SLiM themes.
Copy the theme files to this directory:
/usr/share/slim/themes/slim-minimal
Edit the SLiM configuration file and change the theme:
/etc/slim.conf
FYI: If you have a -really- long username, the text will "cut off". To fix this, simply change the font size values in the theme file to a smaller one of your choice.