They said music theory, not music harmony. Music harmony is a subset of music theory and music theory is a codification of familiar patterns. Those patterns lik

They said music theory, not music harmony. Music harmony is a subset of music theory and music theory is a codification of familiar patterns. Those patterns likely formed because of their strong physical/physiological effects. I don't know enough about the visual arts to know whether color harmony is a subset of color theory. Or if color harmony is even a thing.