Marty the zebra is the focus of the coloring page - it's his birthday, and he's surrounded by his friends. Alex the lion, Melman the giraffe, and Gloria the hippo are all smiling and celebrating with him, with the penguins joining in the festivities too. To bring the birthday spirit even further, I recommend coloring Marty a bright yellow, with cheerful pinks and blues for his friends. The stars in the sky could be in all sorts of colors, and the presents in front of him could be decorated however you like. There's just so much room for imagination, so you could even make the cake a rainbow of colors if you'd like. Enjoy the fun of bringing Marty's birthday to life with your own creative touches!