This dinosaur coloring page features a long-necked creature with a gray body and white underbelly. Its head is small and its beak is long and thin, with small, spike-like teeth. Its two long legs stretch out in front, while its two shorter legs are tucked beneath. On its back is a long and narrow tail. To bring this creature to life, I would choose a light shade of blue-gray for the body, with slightly darker hues along the ridges of the dinosaur's skeleton pattern. The white underside could be treated with soft yellow and pale blue highlights. The beak and spike-like teeth would look great in a light brown with orange tones, and the legs could be given a dark, muted green with brown highlights. Along the tail, I would use a combination of blues and grays for added natural definition.