Binary package “kde-config-gtk-style” in ubuntu cosmic

KDE configuration module for GTK+ 2.x and GTK+ 3.x styles selection

 Configuration dialog to adapt GTK+ applications appearance to your taste
 under KDE. Among its many features, it lets you:
  - Choose which theme is used for GTK+ 2.x and GTK+ 3.x applications.
  - Tweak some GTK+ applications behaviour.
  - Select what icon theme to use in GTK+ applications.
  - Select GTK+ applications default fonts.
  - Easily browse and install new GTK+ 2.x and GTK+ 3.x themes.
 .
 This package contains kde-gtk-config module for KDE System Settings and
 common files (icons, localization files and etc).