I don't recall the name of the author nor the title of the book. I only remember one thing from it. There is a book the MC reads or wrote in which the various stereotypical racial colors are mentioned, usually a different one each time, but it goes something like 'white - actual coloring may range from pink to dark brown and should not be confused with them'. I know that is not how it was in the story, but it is as close as I can remember. I'm pretty sure I read it back in the 70s. Any help would be appreciated.