INDIANAPOLIS — It is a basketball town, after all. Raucous Jets fans took over Indiana’s sleepy capital city this weekend, turning bars and hotel lobbies green with envy in preparation for a playoff showdown to keep their Super Bowl dreams alive. Despite the home field advantage, Indianapolis Colts fans were outnumbered – and shouted down – in more than a few local venues including a downtown hotel where public computers were adorned with Jets screensavers. “I can’t stand Jets fans,” said one barfly in a Peyton Manning jersey. “They’re so obnoxious.”