I have mixed feeling about the LED lights, not just in this building but as an architectural and artistic trend. It seems like everything these days has color changing LEDs on it somewhere to "personalize" the look of it for holidays and events. The lighting does not usually solve any problems, or is intrinsic to the design of the building or structure, it is just tacked on for a wow factor. Good lighting can make a building sing at night (see: The State House and most of the monuments in DC), but by just bathing something in saturated colored light that can change on a whim, you are drawing attention away from the structure and towards the lighting. Lighting for lightnings sake doesn't appeal to me and that is what I feel color changing LEDS mostly do. THey just add a "wow" that may be considered tacky in 10-20 years, just like 80's neon does now.
Granted, after saying all of that, this glowing cube will become a landmark and tons of tourists will take pictures of it at night. It will be a success in that regard, but wouldn't it be better if it was a success because of its construction and design, not just because we slapped color changing lights on yet another structure?