Question for NFL fans who attend games, need input!?

Ok, I'm a HUGE Favre fan, and also a Packers fan. Big coincidence huh? Anyway, I have never been to an NFL game before and I want to see Favre play before he retires for good. (Not a joke here, he will one day) . I plan on making the vikings game at the rams in October. I have a packers Favre jersey. I don't care for either of the teams playing and will be sitting on the vikings side. Is it okay to wear the Green Bay Favre jersey to the game? Or will I get killed? I want to show support for Favre, not necessarily for the team. Did anyone notice if there were packer jerseys at any of the jets games last year and how that went?