I have to go to DH's work do. It's a smart dress code, so not uber formal but I can't wear jeans (boo). I am going to buy [[http://www.debenhams.com/webapp/wcs/stores/servlet/prod_10001_10001_008010670143_-1?breadcrumb=Home%7EWomen%7EDresses this]] dress and [[http://www.debenhams.com/webapp/wcs/stores/servlet/prod_10001_10001_050010504060_-1?breadcrumb=Home~Shoes~Women~Mid+heel+shoes these]] shoes. What colour/style of tights do I need?