i3 Ricer is a GUI application designed to generate theme files for the i3 window manager. i3 Ricer is not a comprehensive emulation of i3's config options. Users are engouraged to check out the official docmuentation for more information on configuring your window manager.
"Riceing" is the colloquial name given to the practice of building or modifying a desktop environment to the users personal aesthetic tastes. i3 is just one of many applications commonly used in this practice. Future support is planned for i3bar, picom, rofi, and dmenu.