When you live in Paris, you can have the luxury of choosing your next home based on the century of your preference.  A pure luxury when you are a designer professional or design aficionado.  For Pierre Sauvage and his partner, an 18th Century apartment provided all the proper features for their ideal aesthetic as opposed to an 19th Century one, which according to Pierre is perfect for a country home but not for an apartment because it may feel outdated.  ” I like classic structures and strong-looking floors, Like you see in the work of David Hicks in the ’70s,”  Says Sauvage.  And that may explain why Pierre Sauvage layered all the floors in the apartment in in different patterned rugs… a blue and red oriental-looking carpet in the bath, leopard in the library… and geometry in the dining room.  Pierre Sauvage is also the owner of Casa Lopez, a rug company and most of the rugs come from there.  The colorful apartment is featured very appropriately in the Color issue of AD’s current issue.  Blue and almost colored wood paneling reign in the apartment as a background for the sumptuous fabrics and furniture….