Infuse your kitchen with a cheerful and sunny vibe with a yellow theme. Paint the walls in a sunny yellow shade to brighten up the space. Choose white cabinets and countertops to create a fresh and clean look. Add coastal touches like seashell-shaped cabinet knobs, a yellow subway tile backsplash, and a pendant light with a woven rattan shade. Incorporate natural elements with a wooden dining table, rattan bar stools, and a sisal rug. Hang artwork featuring beach scenes or sunflowers to enhance the coastal ambiance.