Hi! I've build something similar in the past (two day build) and it was a very fun project combining led programming and hardware construction for the table. I spend about 50$ for this project. May take a look to my photos and video https://stetro.wordpress.com/2013/02/28/led-coffee-table-raspberry-pi/
My source code is also published for arduino or raspberrypi on github.com/stetro
Cheers
Steffen