The German company that constructed the balloon under which the Olympic Flame is burning for the Paris Games is overwhelmed by the positive feedback. “The feedback is spectacular,” said Benjamin Weigl from the Wörner company based in the southern German city of Augsburg. The lighting of the cauldron and the balloon then rising into the Paris night sky was a highlight of Friday’s opening ceremony. During daytime at the Games, the balloon remains grounded in the Tuileries gardens but it then rises from sunset until 2 am. Paris Mayor Anne Hidalgo has said she would like to keep the installation p…