This is a rofi theme based on the Materia GTK Theme
What it looks like:
One Liner:
# wget https://raw.githubusercontent.com/DefunctLizard/materia-rofi-theme/master/materia.rasi \ -P /usr/share/rofi/themes
Or, the long version:
$ git clone https://github.com/DefunctLizard/materia-rofi-theme.git
$ cd materia-rofi-theme
# cp materia.rasi /usr/share/rofi/themes
Just type:
rofi -show run -theme materia
You can get rofi to automatically run at the touch of a key in the I3WM config files. Just add this to your ~/.config/i3/config file.
bindsym $mod+d exec --no-startup-id rofi -show run -theme materia