For a coastal beach house kitchen, a colorful backsplash can evoke the vibrant colors of the ocean and the beach. In this ambiance, the backsplash is made of mosaic tiles in shades of turquoise, seafoam green, and sandy beige. These colors reflect the coastal theme and create a serene and relaxing atmosphere. The rest of the kitchen features white cabinets, natural wood elements, and nautical-inspired decor. The colorful backsplash adds a touch of coastal charm and brings the beauty of the beach indoors.