This is quite a good and typical rationalization but ultimately and absolutely wrong.
The client usually doesn't know crap and their judgement is completely clouded by the fact that it is a picture of someone they love.
What will you do when the next client says that the color looks horrible and unreal - and you have no idea what you have done wrong and no idea how to fix it?
Your first goal is to be able to control the light and color so that you can produce a good, well exposed image with a good enough color balance SOOC that you are able to edit to the end point that will look great.
You might look into something like this
X-Rite ColorChecker Passport X-Rite Photo X-Rite Passport
I, in no way, meant to imply complacency. I like how this shot turned out, but to find out that it is "technically" incorrect bothers me. I want to lean how to fix it, so that I may grow and become better.
I often find that the shots I like least are the shots that my clients like the most. In talking to close friends about this phenomenon, they have pointed out that as a photographer, I notice much more than my clients notice. If the shot isn't at the level I strive for, all I see is the negatives. My clients don't necessarily see those flaws, and they love that shot. Even if it not perfect in my eyes, or the eyes of fellow photographers, it is in their eyes.
Again, I do not mean to imply complacency. With every shoot, I learn more. I might try a new pose, and it definitely doesn't work; I might try a new lighting technique, and decide that it isn't very flattering; I might try a new location, and decide the lighting is horrible. For my tastes, I thought the above shot looked great, but "technically", it isn't. I want to learn how to fix that. I want to learn how to master the colors, so my clients get accurate and consistent shots.
In the shot above, the client had almost no color - dare I say, "white as a ghost"? She spends almost all her time indoors, so she was extremely light. This is a situation I have not encountered. I felt that these shots accurately reflected her skin tone, but perhaps not.
In the interest of learning, how do people deal with situations involving exceptionally fair-skinned clients? What can I do in post to improve this shot? I've read the article on SmugMug that was posted, but I don't understand how to correct that issue.