So, one of my first jobs while working in library school was to assist with the digitization of a massive collection of costume design drawings from a group known as the Motley Group (not to be confused with Motley Crue). This let to me eventually finishing my library degree and going onto a degree in Theater History with an emphasis on the history of technical design work.
All branches of theatrical design are about communicating information to the audience seamlessly. In Romeo and Juliet, for example, it is traditional to costume the warring families in different colors. Romeos family might be all in reds, oranges and yellows while Juliet’s family might be in greens, blues and purples. This is useful, because it communicates with the audience immediately which character is associated with which group- important in a play with about 20 characters. Opera and ballet also have costuming traditions. In a medium where people don’t speak and the plots are often rather odd, identifying characters by their colors and style is even more important.
So, when I was selecting colors and costume designs for my ballerina paper dolls, I was well aware that there were traditions that I needed to take notice of. I did my best to keep these costumes fairly “traditional” with the exception of the Firebird. I didn’t like either tutus or the unitards that seemed to be common, so I went with something a little more contemporary.