qmk-dactyl-manuform-a/keyboards/clueboard/card/keymaps/default

The default keymap for cluecard

Note that this keymap has audio enabled, so the RGB mode button does not go through the different effects. So the LEDs will still show a static light, that is configurable with the hue, staturation and brightness buttons. You can of course also turn them on and off with the on/off button.