kde-config-gtk-style software package provides KDE configuration module for GTK+ 2.x and GTK+ 3.x styles selection, 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 kde-config-gtk-style
kde-config-gtk-style is installed in your system.
Make ensure the kde-config-gtk-style package were installed using the commands given below,
$ sudo dpkg-query -l | grep kde-config-gtk-style *
You will get with kde-config-gtk-style package name, version, architecture and description in a table
| Distro | Ubuntu 16 04 lts xenial xerus |
| Section | KDE |
| Package | kde-config-gtk-style |
| Version | 4:5.5.5-0ubuntu1 |
| Description | KDE configuration module for GTK+ 2.x and GTK+ 3.x styles selection |
| Sub Section | KDE |