I've just found these on NFL shop
http://www.shop49ers.com/product/index.jsp?productId=3321663&cp=2237423.2240194&pageDisplay=actfam&page_bucket=0&int_prevBucket=-1&totalProductsCount=16&pageType=family&doVSearch=no&pageBucket=0&showSizeSearch=false&int_nextBucket=0&page=2&pageCount=2&hasPagination=false&pageNum=1&parentPage=family
Does anyone know anything about them? Ive not known the team to wear black at all....