Actually, it Depends. Some things a short quip is all one needs. If the color is yellow, then yellow, is the sufficient description. However, ever looked deeply into the colorful feathers of a male peacock? Try and reduce that description into red yellow and blue and you will fail miserably.
It's like this: Some things, a word or a phrase, Other things, an essay. Yet other things, a book, yet other things, series of volumes. Your simplistic notion attempting to accurately convey the complexities of life in terms of pithy sentences will obfuscate the finer of it's hues and colors which do exist, which, if not factored in, may lead to unjust policies. You seem like you are looking at an artist's palette, which consists of umber, cadmium, thalo, sienna, indigo, and you see only red, yellow, and blue. A guy like Mondrian can get away with it, but not Titian or Rembrandt though all are valid.
Take the above, I probably could have shortened it to one or two lines, but it wouldn't be as robust. Here, robust works. so why make assumptions? Unless, of course, you are grasping for some one-size-fits-all straws to invalidate more nuanced writing. Life isn't like that. If you don't believe me, try reading the Constitution, or the Federalist Papers, or "Wealth of Nations", etc., etc., etc.
Thing is, you can't feed Updike or Salinger to someone weaned on the tabloids and comic book movies.