Raphael is a large and powerful turtle, sleeping peacefully on top of a dark green blanket. His shell is a calm and deep sea-green, with a few darker streaks to indicate age. His neck and face are a lighter shade of green, with his eyes closed peacefully in sleep. His arms are folded in front of his face, making him look ever so content. His eyelashes cast gentle shadows over his face, which is finished with the smallest of smiles on his sleepy lips.
To colour this page, I suggest shades of green for the main colour. For Raphael's shell, try a soft olive-green for the base colour, and a few strokes of a darker shade to give the aged look. His face can be lighter, perhaps a cool jade or pale sea green. For the blanket, pick a shade of deep green, and any other accents such as the shadows from his face and eyes can be slightly darker than their base colour. Finally, add a warm yellow for the eyes and a touch of orange for the small smile.