When coloring this page, it's important to get the bright, vivid shades right. To capture the crocodile's dangerous look, use shades of green ranging from a deep, dark green for the spots to a brighter, more vibrant green for the body with a lighter, softer color for the belly. Make sure the crocodile's eyes are a deep yellow color, and use a gray shade for the teeth, making sure to make them look sharp and pointed.
For the monkey, use an earthy brown tone for the fur, and make sure to give the monkey's expression a scared look by using lighter shades for the eyes. Add detail by using yellow for the ears and a lighter shade of brown for the tail. In the water around the monkey, a light blue or blue-green would work nicely.
To make the page really pop, try using some lighter shades around the edges and in the background to add some contrast and draw the viewer's eye. Don't be afraid to mix up bright and duller shades to create an eye-catching composition.