This is the Legendary Pokemon, Celebi. The coloring page features Celebi surrounded by a swirling cloud of leaves and hues of pastel blue and green. The upper part of Celebi's body seems to be enveloped in a dark green aura, while the lower half is bright blue with a pinkish tinge. The face is a delicate mix of bright yellow and pale green tones, with two large and adorable blue eyes. Its ears are large and pointed, reminiscent of a fairy's. The beak is small and brown, and the tail, with its tips and swirls of green, adds a playful feel to the whole scene.
To color the page I would recommend starting with Celebi's face, using a combination of the yellow and pale green colors. Furthermore, I would use a dark green to fill in the upper part of Celebi's body, then a bright blue along with a pinkish tinge to fill the lower part. Once filled, I would use a golden yellow to paint Celebi's eyes and blue for the tail and the small, brown beak. Finally, for the clouds of leaves and bud, I would use a pastel blue and green.