oxygen-molecule software package provides GTK+ theme to match the Oxygen widget style, you can install in your Ubuntu 14.04 LTS (Trusty Tahr) by running the commands given below on the terminal,
$ sudo apt-get update $ sudo apt-get install oxygen-molecule
oxygen-molecule is installed in your system.
Make ensure the oxygen-molecule package were installed using the commands given below,
$ sudo dpkg-query -l | grep oxygen-molecule *
You will get with oxygen-molecule package name, version, architecture and description in a table
| Distro | Ubuntu 14 04 lts trusty tahr |
| Section | X Window System software |
| Package | oxygen-molecule |
| Version | 3.2-0ubuntu1 |
| Description | GTK+ theme to match the Oxygen widget style |
| Sub Section | x11 |