Designed by Ali Ganjavian, the Kaleidolight uses the light conduction of glass tubes to connect the outside wall with the inside. Each module consists of a clear glass cylinder with aluminium lid inside a Teflon-lined aluminium tube that you insert into the outside wall. You can see a pic of one of the modules after the jump.
You can change the colour of the light by using different-colored glass tubes. [Yanko]