I'll decribe the animation "looks" with 6 literal view.
setting: Imagined place that some animal kids are playing, and these kids have their own colors that can make the shape of something.
conflict: An animal that has a black monotone colour vs the discrimination of other animals that have coulorful colors
Or, the animal who have black color fights his own desire that want to have colorful color.
climax: The black animal took the coulor from a more small animal, and then he could join the group of animals that have colors. Although, the small animal who were taken color became lonly instead of the black animal. Then, the black animal decided to take his color back to the small animal, but he became lonly like before he has a color. Then the small animal and other animals were coming to him and made him joined their group. They became friends.
symbol: Animals are symbol of fuman kids, and colors describe their own personality and identity or some speciality.
irony: After taking color from small animal, the black animal could join the group that have colors. But after taking color back to the small animal, eventualy he was descriminated by them.
theme: If people don't have their own speciality by themselves, they can describe their specaility with their good friends.