Answer:
Because artwork can convey elements of an idea or culture in a way nothing else can. Universal artistic elements are consistent across cultures and these can explain things in a way similar to language.
Well, certain colors of your clothing can tell a lot about who you are as a person. Wearing dark colors can give others the assumption that you're emo or closed up or possibly introverted.
Having bright colors can make people think you are extroverted, bright, or outgoing. I wasn't too sure what you were truly asking, but I hope you can possibly build off from here and answer your question
I hope this helped you :)