Jeans are a year-round wardrobe staple, but the washes that feel fresh change with the seasons. This fall, it’s less about switching up your silhouette and more about experimenting with color — and celebrities are making a strong case for stepping beyond your usual denim rotation. Light-wash jeans, like the ones Heidi Klum wears, deliver that effortless cool-girl-next-door vibe, while medium-wash denim feels a bit more polished for everything from business lunches to date nights. Want to venture beyond blue? Kate Middleton has given chocolate-brown jeans a sophisticated stamp of approval, whil...