REDOING THE WHITE HOUSE: Now that cabinet positions and canine choices largely have been sorted out, the Obamas have filled another crucial role. Word is the couple has tapped Michael Smith as the new White House decorator. Based in Los Angeles, but active in New York and London, too, Smith’s client roster brims with power players including Steven Spielberg, Rupert Murdoch, Peter Chernin, Michelle Pfeiffer, Cindy Crawford, John Thain and Sir Evelyn de Rothschild. Notwithstanding the heavy-duty profiles of his clients, Smith is known for giving them comfort as well as understated style. And lots of laughs — Smith’s wicked sense of humor has been said to be his secret weapon.