Color Therapy and Primary Colors

I received two books from Amazon.com (used) about color. The Color Therapy book isn't what i expected. It was published in 1975 but the information seems relevant today as it was 33 years ago. So far, i am reading about the importance of natural light to our health. I subscribe to Mercola.com which often talks about the importance of light therapy especially for people who live in the northern areas where sunshine during the winter is a rare occurrence.

I haven't started reading Primary Colors but it is a collection of essays on the primary colors blue, yellow, and red.