Just a little info about Heinz field. 10 days ago turf was replaced inside the numbers when temp was in single digits for a week after . One wouldn't think that was wise but I'm not an expert on this kind of grass growing as I would think sod would be dormant this time of year in this weather. However before they covered the field on Thursday , the playing surface looked better than the sidelines. Is it possible they colored it for TV ? IDK just putting info out there for your own interpretation.