It was news to me. Evidently the base lights were being tested yesterday (green for St. Patrick’s Day?). Thanks to Doug Smith for the photo!
UPDATE: I just remembered that I took a photo of the base (unlit) the other day:
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At this website a story with a little information about the green glass.
http://www.tribecatrib.com/content/1-wtcs-bomb-proof-base-gets-shiny-green-skin
Yes, it must have been a St Patrick’s day display. I’ve seen another test a couple of days ago. Back then the base color was blue, but they changed the color and the brightness of the display. It looked pretty impressive.
I just saw the base lights animating, vertically like a sound meter display, the colour was a light baby blue/mauve…Looked kinda cool, except when I went to take a photo it stopped!!