Was looking for this myself and stumbled upon this link. Before following those instructions though, make sure you have run:
sudo apt-get update
sudo apt-get install git
Depending on your Node.js installation, use either:
sudo nodejs server.js
Or if you installed Node.js from source:
sudo node server.js
This works on my MSI GT60-2OC. It is a little cumbersome to configure, but not too bad once you get it set up. After getting it running, you can create different files for different lighting options. All of the options are described here.
EDIT: Discovered something new. I believe the quickbar is controlled by the UEFI bios. Originally I wasn't using UEFI in 13.04 and the bar didn't work at all. Now I am using UEFI in 14.04 and I can use some of the buttons including the keyboard backlight button. Using the button cycles between on/game mode/off for me. Using this nodejs program will save the setting you choose and the button will work for that profile until you change it again with nodejs.