A mobile boutique scene is bringing interior design and home accessories to Denver courtesy of a fleet of roving trucks. According to findafashiontruck.com, there are two dozen of them cruising around the streets of the city. “People have said, ‘I’ve seen fashion trucks and food trucks, but I’ve never seen this,’ ” says Erin Martin, owner of C’est Si Bon, a decor truck whose interior is evocative of a country farmhouse in France.