The growing flock of Twitterers celebrated 2013 in style with their first holiday party since the successful IPO earlier this year. City Hall in San Francisco was bathed in Twitter Blue lighting inside and out.
![Twitter_Blue_City_Hall_San_Francisco_from_above Twitter_Blue_City_Hall_San_Francisco_from_above](http://siliconcali.com/wp-content/uploads/2013/12/Twitter_Blue_City_Hall_San_Francisco_from_above-300x200.jpg)
Some of the unusual treats featured were blue cotton candy served on blue glow-sticks.