xcolor names can contain CJK characters! So here are some Chinese and Japanese traditional colour names like 丁香色, 御召御納戸 . CJK-related packages not required if your document doesn't need to display any CJK text.
This template allows you a quick start creating books with LaTeX that you can directly publish on Amazon, Google, and Leanpub as e-book or printed edition. Check out the accompanying book "Better Books with LaTeX the Agile Way" for step-by-step instructions for this template: https://amzn.to/2Jiwpzh
(02/08/2020: fixed issues relating to TeXLive2019 upgrade. pdfLaTeX PDF output is no longer working properly but the HTML output is fine, so is the XeLaTeX PDF output).