This coloring page shows five aircraft flying in the sky. In the middle two large aircrafts, with a smaller one in the front and two in the back. All of them have long wings with propellers. To give a realistic look to this page, I would suggest to color the light parts in white and blue, as the sun reflects on them. The wings and the propellers could have a darker color, for example dark grey or black, to emphasize the structure of the aircrafts. The sky and the clouds could be colored in pastel colors, like pink and light blue, to add brightness and contrast to the page. Finally, the ground undefined parts could be colored in beige, to create a nice effect.