blubuntu-theme software package provides Blubuntu look - GTK+ and Metacity theme, 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 blubuntu-theme
blubuntu-theme is installed in your system.
Make ensure the blubuntu-theme package were installed using the commands given below,
$ sudo dpkg-query -l | grep blubuntu-theme *
You will get with blubuntu-theme package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | X Window System software |
| Package | blubuntu-theme |
| Version | 0.3.1 |
| Description | Blubuntu look - GTK+ and Metacity theme |
| Sub Section | X66 |