Kirsten,
As a photographer and filmmaker I am very interested in the actual color of all street lights. Not only those awful sodium-vapor but the LED units we may have in the future.
So it is with interest that I looked at the photograph that is next to your article. What is it? Is it a street light or is it a close-up photo of some sort of LED array? Although this photo is colorful and interesting, is it an actual Cree street light or just some random stock photo supplied by Cree? When I studied journalism at Baylor we were instructed to include a caption with all photos so why is there no caption here?
Thank you.
Terry Thomas...
the photographer
Atlanta, Georgia USA
http://www.TerryThomasPhotos.com 
