Facebook holds an annual Games Day intramural event for its employees and, just like gangs in Oakland, the teams identify themselves by their colors. Yesterday, a tipster spotted Facebook's red team sitting around on the streets of Palo Alto, visible for all to see. Facebook's white team is much sneakier. For example, the entire team is at this very moment standing right behind you. Take a look. Gone already? Don't be embarrassed. These guys — Babak Hamadani, Blaise DiPersia, Dale Dwelle, Navid Mansourian, Pedram Keyani and Ryan McGeehan — move fast. Just ask the Facebook engineer at the end this clip, Chris Putnam.