The Physics Hypertextbook is an open-source, idiosyncratic, and highly readable online physics textbook created by author, illustrator, and science teacher Glenn Elert. Readers interested in the science of color will enjoy the Color chapter of the textbook, which through five sections lays out the conceptual and historical background on color, provides problems to apply these concepts, and links to further resources and information. The chapter is very easy to navigate: readers can simply scroll the page to read each section, then use the menu at the top or bottom of the page to jump to the next section. For instance, the "Discussion" section delves into the color spectrum, how English got its words for different colors, and the principles of color mixing, among other foundational concepts. The "Summary" section provides a short outline of the content covered in the Discussion, which should prove useful for physics students preparing for exams. The "Problems" section offers conceptual and numerical questions to apply color concepts. The hypertextbook is a work in progress, so readers will find some sections in various stages of completion, but nonetheless it provides a friendly and cogent overview of the science of color and the broader field of physics that beginners will enjoy.