Fashion is having a code red for fall. Head-to-toe crimson looks fired up the runways. Not a look for the faint of heart but one that can turn every gal into a sexy siren (did you see Jennifer Lawrence at the Oscars?). The color of passion appears everywhere from store interiors and hotel decor to gadgets and to-die-for accessories. A tube of rouge lipstick and a blood-red fur chubby, and you’re on your way to the season’s boldest trend.