How was art a way of language?

Art was a way of expressing your emotions and your personality, Example: like say you drew a sunshine waterfall that was filled with bright colors this would show that you are a bright kind person and you are feeling happy that time.

dark colors + light colors = feeling normal nothing much

dark colors + scary drawing = goth, emo, feeling murderous

light colors + good drawing = feeling happy bright person

anyway colors in art and what your draw show your moods and what kind of person you are and people use it to communicate with others.

So a drawer + drawer = friends and art is their way of talking.