keymap.c

keymap.c

static uint8_t mode = 0;

bool process_record_user(uint16_t keycode, keyrecord_t *record) {
    if(keycode == 20737) { //fnc key. 
        if(record->event.pressed) {
            rgb_matrix_set_color_all(110, 50, 100);
            mode = rgb_matrix_get_mode();
            rgb_matrix_mode_noeeprom(1);
        } else {
            rgb_matrix_mode(mode);
        }
    }
}