Fall fashion gets a jolt of modern. In a whirlwind of unexpected layers, pops of color and playful prints, one can easily get swept away.   TALENTS: Photography: Tania Quintanilla Photo assistant: Rudy Arocha Model: Taylor Lovelace Wardrobe stylist: Graham Cumberbatch Wardrobe assistant: Kathryn Garza Hair Stylist: Ted Sabol-Williams Makeup artist: Clarissa Luna   Green leaf pants by St.John ($695; Julian Gold)....