NEW YORK — The rainy season can bring down even the most sunny among us. But designers aren’t going to let a few April showers faze them. In fact, they’re taking a lighthearted approach to foul weather gear with fun shapes, bold colors and functional fabrics. Here, Yeohlee’s hooded jacket in polyester, polyurethane and nylon over cotton pants. For more, see pages 4 and 5.