One day at work at radioshack when there was no customers in the store, i was lookin at a section in there store with LED's. I bought LED's (276-316, blue) couple project boxes, (1)twin AA battery packs, (1) Rocker switch, and (2) spools of hook up wires (black and red). You can't use the car battery because the LED's is powered by 3.2 volts max, so 2 AA will do the job.

the out come was this, flickin the switch, the flooring in the front comes out blue, and the back flooring came out white(they ran out of blues, so i bought white ones).

it all cost me around 30 bucks...well that is with my discount