Very sheer black pantyhose.  Just replace your black tights or bare legs with a pair of super sheer blacks and count yourself in the know.   Even Tim Gunn is on the bandwagon, in his recent Marie Claire column. Wear your sheer black legs with anything, obviously at night but also with daytime looks.  Paring with a black skirt would be safe, maybe try a different color shoe.  Or channel Kate Middleton and pair with a white dress. (the bloggers gave Kate the business about this look but I think the problem is the jacket with the dress, not the stockings).