Update: I foolishly thought there may be shorter works on mixing and matching colors, looking at the books on color at some local libraries showed me how wrong I was. I've up the rating to a five, it's the best out there that I can find for now.
Edwards has been teaching: drawing, painting, and other art topics for many decades. She found that students that did well in her color theory classes had a problem in mixing and using colors in their art. She totally revamped her color theory curriculum, this book is the result of that work. Most of the exercises included do not require drawing skills, so anyone can pick up this book and get something useful from it.
One key skill is the ability to see colors as values, the equivalent of mapping colors onto a gray scale, another is how colors affect the perception of other colors, and how habit play a role in how we perceive colors.
She covers the traditional YRB color wheel with a side note that while CMYK is good for printers, decent pigments for implementing it doesn't currently exist. After covering some theory, the practice portion starts. A selection of paints, brushes and other items is laid out and the mixing and painting begins. Students wind up making their own color wheel that has several alterations to help analyze object colors. You also make wheels to show color intensity, along with mixing matching swatches. A bit of color harmony theory is added at the end.
Next comes some simple still life instruction using folded color paper, the end goal of which is to select and mix the appropriate paints to match the colors of the paper model. A bit more difficult than it sounds, several painters tricks are discussed that can aid in accomplishing that goal. Finally, the student paints a floral still life, some drawing skill is required.
The book wraps up with a bit of touchy-feely chapter on the meaning and symbolism of color, the author does warn you that this is a pretty subjective topic. Questions like what colors you like, dislike or associate with certain emotions are asked and I'm sure that it plays well in a classroom.
If you master this material, you should be able to paint a picture that accurately represents the colors in any scene you care to reproduce. Also, this is an art book that you can read on a screen, all of the important color reproduction will be your work and not from the book.