How can I install new Kali Linux theme in Ubuntu 16.04?
I don't use Kali, but if I saw a theme I loved for GNOME or even Unity, I'd look for it at https://www.gnome-look.org/
*OP reported finding it - https://www.gnome-look.org/p/1013030/
Kali Linux theme (Cinnamon+GTK+Wallpaper) - https://www.gnome-look.org/p/1012720/
I doubt there is a color theme for terminal, but suspected it was mostly a $PS1 value being set (ie. colored prompt) where I suggested looking at https://help.ubuntu.com/community/CustomizingBashPrompt
*OP reported problem solved.