I disagree that music theory and the physics of color are more relevant to our daily lives than mechanics and electricity - the models used in learning about electricity - direct and alternating current, how batteries work, how an electric radiator works - are pretty close to our daily experience of electric items. The concepts in mechanics - rotational inertia, gear ratios, kinetic and potential energy - are directly relevant for cars, bicycles, balls ... whereas knowing about the physics of colors is pretty damn seperated from our use and experience of colors (the same seems to be true for music theory).