For fifty years the Space Needle has been an iconic symbol of Seattle. Fifty years ago when it was being built it was probably scoffed at. But then, so was the Eiffel Tower in its construction days and likely any other construction that did not have particularly practical purpose.
The Space Needle roof was painted orange for its 50th anniversary. I looked up the name of the color--"Galaxy Gold" in keeping with the futuristic theme of the 1962 Seattle Worlds Fair. The fair suggested lots of things we might be doing in the future, and amazingly, many of them which seemed like science fiction at the time are now fact, particularly in the realm of communications and information techonology. Such things as push button phones, you tube, and Skype come to mind.
Some no gos, though: flying to work in personal gyrocopters, domed cities for climate control, Jetson's style flying cars.
I wonder what symbols the other headbangers have chosen. You can check them out from the links in my sidebar.