[Noob idea based on the LED lamp]

I managed to get hold of a old PS/2 keyboard which I can mod as much as 1 want.

But im not sure if it will work or not, does ps/2 have a 5v power source?

[Noob idea based on the LED lamp]

I was watching the episode with the LED lamp with the photoresistor.

I was wondering, would it be possible to put it in a keyboard?

Maybe more than 1 circuit. So parts of your keyboard light up when you move your hand over it, rather than lighting up when your not using those keys.