The Fantastic Four stand ready to protect the world from evil forces. Mr. Fantastic is the leader of the team, and he stretches and contorts himself to extraordinary lengths. The Invisible Woman has the power to turn invisible and can also create force fields. The Human Torch can generate and launch fire from his hands, as well as take flight. The Thing is a strong, rock-like creature with super strength.
When it comes to coloring this scene, I suggest keeping each character in their primary colors. Mr. Fantastic can be colored a bright blue, the Invisible Woman a light pink, the Human Torch yellow, and the Thing an orange-brown. For the backgrounds, using brighter shades and contrasting colors for accents will help the scene to stand out. If you like, you can add stars and planets to fill out the sky behind the heroes, or more factual details such as buildings or vehicles in the foreground. In the end, make sure to have fun coloring it your own way!