I was a graphic design student with interest in art, design, and technology. I had designed a set of posters that have helped me, posted them, and sort of forgot about them for a while. When I checked back after 2 years I saw that they gotten a lot of interest on Google and Pinterest, becoming some of the most highly shared images on the topics! When I discovered this, I shared them more formally and began to market them. I thought they might help other artists, designers, and art teachers.
Since that time I have created a few more, a Color Psychology Poster which lists the common associations to 12 popular colors, and then a Color Mixing Guide which explains how to mix for a RGB scheme. These too have become a popular teaching tool.