Achieve a modern and sophisticated coastal kitchen with a coastal gray theme. Paint the walls in a light gray shade to create a neutral backdrop. Choose gray cabinets and pair them with white marble countertops for an elegant look. Add coastal touches like a seashell chandelier, a subway tile backsplash in shades of gray, and a pendant light with a weathered metal finish. Incorporate natural textures with a reclaimed wood dining table, rattan bar stools, and a jute rug. Hang coastal-themed artwork or display a collection of sea glass to enhance the coastal ambiance.