qmk-firmware/keyboards/gray_studio/cod67/keymaps/rys
..
keymap.c
readme.md

Rys's keymap for a COD67

The COD67 supports really nice RGB underglow which you can see through the mid diffuser. I've put control for that on layer 1, along with reset on Space, backlight toggle on Enter, and the function row. The board supports all of the QMK RGB effects.

Look at the excellent RGB Lighting docs on the QMK site for more controls.