Applying Themes For Root Apps (i.e. Synaptic)

This came from here and was written by Artificial Intelligence

cd /home/YOUR USER NAME/.themes
sudo cp -r THEME YOU WANT TO USE /usr/share/themes
sudo gedit /etc/gdm/gdm.conf

Click find and search for "GtkTheme"

GtkTheme=THEME YOU WANT TO USE
GtkThemesToAllow=all (this was the default)