Disco dance flor.

I want to do a disco dance flor like jamiroquais one in little L , the guy that did tripeace also did something similar.

i did the flor add materials ,but now i got stucked , should i do the color squares like glass and then add light below ? , i want them to go from black , when their ligh is off , to full color with glow or bloom ,

so maybe the glow i can do it with the compositor , but what kind of material should i use ? glass ?

Has anyone done this before ? http://www.youtube.com/watch?v=qJbmgx0iDxk

her’s the blend http://uploader.polorix.net//files/249/danceflorrr.blend