blackbox-themes software package provides Themes for the Blackbox Windowmanager, you can install in your Ubuntu 16.04 LTS (Xenial Xerus) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install blackbox-themes
blackbox-themes is installed in your system.
Make ensure the blackbox-themes package were installed using the commands given below,
$ sudo dpkg-query -l | grep blackbox-themes *
You will get with blackbox-themes package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | X Window System software |
| Package | blackbox-themes |
| Version | 0.5 |
| Description | Themes for the Blackbox Windowmanager |
| Sub Section | X63 |