Boomerang GTK3 theme aims to smarten up dull desktops with it shiny and professional look.
The theme comes in both a dark and light variant.
The theme requires the installation of the gtk2-engines-pixbuf package. Click the button below to install it.
Click to install gtk2-engines-pixbuf
For the theme itself, and simple installation instructions, head over to the designers DeviantArt page.