You can buy an RGB led strip , and a RGB controller with remote control and power source (they're pretty cheap), put those led strips wherever you want (you can cut them, and put them on different places), and ligth in any color you can imagine (fixed or variable), with any intensity you want, from really dim to fully bright.
they're pretty easy to install, and as the led strips has adhesive on them, you can put them almost anywhere.
I don't reccomend using USB power for lighting purposes, (and even less the keyboard usb connector) for mainly two reasons, first, you have a problem with that light/cable system , and can fry the usb of the keyboard/computer wathever... (think on a useless/burned USB port on your Genos... don't worth the risk), and the second reason its power... USB current its limite to 250 or 500ma MAX on a 5Volts USB output... thats do a 1.2 or 2.5W MAX (for lighting) ..its too small, unless you want always a very very dim light
But even is you decide to use an USB powered lights... DONT use the USB output of the keyboard, use a separate system (USB power bank/usb charger/ whatever.. NOT the keyboard!!)