Chu uses colored all caps text for his signs. His signs change from day to day, and tend to go through syntactically similar phases, with the phrase "12 Galaxies" being his trademark and a constant presence in the signs. In June 2007, Chu broke from this tradition and started replacing this with "85 Galaxies", "130 Galaxies", and "800 Galaxies". At the 2007 Castro Halloween Party, Chu's sign claimed "7,645,000 Galaxies", at MacWorld 2008 he was up to 75,850,000, at the Iraq War protest on March 19, 2008 he was up to 8,685,000,000, and 785,249,000,000,000 by June 21, 2008.