 The cannon at Princeton is routinely painted red by Rutgers students, particularly in the week leading to Rutgers commencement as well as on other notable Rutgers dates.In February 2010, The war between loyal Rutgers and Princeton students became more than just "the painting of a cannon".In the depths of of snow, students not only painted the cannon and its surrounding concrete, but used spray paint to "tag" Princeton classroom buildings, dormitories, and libraries.