Depending on the time of year, City Hall is bathed in a variety of different colored lights for numerous special occasions, with some colors being more obvious than others.

The orange glow for our World Champs, red and gold for our beloved niners and red and green during the holiday season are no-brainers, but what about purple and pink? Or blue? Or what about the combo of green, orange, red and yellow?

We didn’t know either–until now. After a little digging, we put together a slideshow highlighting the colors we could find and their meaning.