Brett Favre jogged out of the tunnel in a purple helmet. He might as well have been wearing a black hat. No, Favre didn't seem to relish playing the villain in his return to Lambeau Field. But it was going to take more than a chorus of boos to throw him off his game. For the second time in less than a month, Favre sliced up his former team and stuck it to the franchise that cast him aside as the…