This mermaid is an absolute beauty, with a long, wavy mane of golden hair. Her tail is a gorgeous mix of deep purples and pinks, shimmering with a series of vibrant green scales. In her hands she holds a beautiful conch shell, adorned with swirls of pink and purple, pressed up to her ear to hear the ocean's secrets. In the background lies a coral-reef, home to a variety of brightly-colored tropical fish, swimming and playing in the ocean's depths. To color this page, I would suggest using an array of cool, calming colors, from sky-blues and seafoam-greens to subtle pinks and purples. To really bring this picture to life, I'd try blending colors together in order to create different depths of the ocean for each layer - perhaps a range of cool blues for the background, with bright pinks and purples for the coral-reef and the tail of the mermaid. Finally, for a glorious highlight, maybe use some deep golden hues for the mermaid's hair.