I always thought the lighting was to happen in the park and not on the actual building..From what I remember reading James Turrel was to include a light installation- now that could also translate into- applying it to the building.
WaterlooGuy- I disagree- LED is not inexpensive. The overall costs are still quite high, especially when wanting to get quality products. Generally, its the longterm savings on fewer repairs, less energy etc., which end up saving you money. But for most clients it is the inital cost which throws them off, leading them to less expensive alternatives- yet in the long run they work out to be more expensive.
LED's, which I should quickly mention, come in a variety of quality levels as well. Straight up white LED's which do not change colour are quite inexpensive, but as soon as you want to have the LED change its colours etc. the cost is exponentially higher.
p5