It was a case of going for gold for Duchess Kate at the Olympics opening ceremony when she opted for a glorious brocade/lace coat in the subtlest of gold shades. Perhaps giving her support for another gold rush for Team GB, Kate wore a beautiful coat/dress from Day Birger et Mikkelson that she had worn as long ago as 2006, and has recycled almost every year since. But you can’t really blame her for this – it is a stunning piece, the perfect colour for the occasion, and also bang on trend for the next influx of brocade and lace that was so part of the A/W 2012 collections. Kate…