Dark is a keyboard image for "Wnn Keyboard Lab" and "iWnn IME for Nexus".
The image will be added to the keyboard image list automatically after installing.
To use this image, go to [Wnn Keyboard Lab settings] or [iWnn IME setting] -> [Display] -> [Keyboard image] and select it.
* <a href="https://play.google.com/store/apps/details?id=jp.co.omronsoft.wnnlab">Wnn Keyboard Lab</a> or iWnn IME for Nexus is required for using this keyboard.