There is a documentary about how he made that piece. It is of Red, Orange, Yellow colour, lime fire flame.
Here is a link for the documentary you can download to watch I believe.
http://movies2.nytimes.com/gst/movies/movie.html?v_id=211972
He also did one piece quite similar to the one displayed at Corning - at Victoria & Albert Museum in London, in 2000 or 2001. That one is much bigger than the one in Corning, in both green and blue color - it is 9 meters high and 3 tiers.
Here is a link for the documentary you can download to watch I believe.
http://movies2.nytimes.com/gst/movies/movie.html?v_id=211972
He also did one piece quite similar to the one displayed at Corning - at Victoria & Albert Museum in London, in 2000 or 2001. That one is much bigger than the one in Corning, in both green and blue color - it is 9 meters high and 3 tiers.