Whenever people cannot agree about something, it is usually because there must be many right answers. If there were only one right way, everyone would be doing it, not unlike dog ear cleaning methods. With appearance, much of the answer comes down to taste.
The question about wrong colour away from the face most often refers to black. As a general rule, wearing colours that are not in your palette creates conflict. When colours are in conflict, one will win. One will lose.
For any person with very light colouring or very low contrast, black is overpowering. It will win, meaning that in the contest between what is getting noticed, it will be the black. If black in on the top half, it gets noticed more and the person fades back and looks smaller. Even if it’s black mascara, it can look like railroad tracks on a face that doesn’t have black in its native colours. If the black garment is bottom half and gets bigger in our awareness than the rest of the body…let’s just say that I don’t need my bottom half looking any bigger.
I know a heavy set, blond-haired, blue-eyed man. He favors dark shirts and pants, presumably to look thinner. Because his body clothed in black takes over his face, his head seems to shrink by comparison. The illusion of a small head is very weak on a man, about as unflattering as having no chin or jaw. His body appears disproportionately large, even larger than it already is, because the eye is occupied with looking at the body all the time. The black pulls your gaze down from his face.
Cheating in black
Of the 12 Seasons in personal colour analysis, only 4 or 5 can balance black without disappearing in it. The 3 Winters are easy enough, though only the True Winter is automatic. The Dark Autumn and Bright Spring can manage black if they mix it with larger blocks of their better colours.
There are darker True Summers who are Wintery looking, but they do not wear the Winter dark drapes well. The young QE II is an example. They could wear black as pants and shoes, because their hair tones approach black. Their colouring is dramatic enough to balance that same effect in the colour black. They do not do so well in a black top, scoop-neck or not. Black looks too heavy, cold, dense, and solid.
Many of these women have thought of themselves as Winter for so long that they are comfortable in black. Once they see how old and tired they look in the solid colour, they quickly learn to adapt it with sheer fabrics, or by adding their cool roses and incredibly sophisticated neutrals. By softening the black with better colours and feminine details, it becomes a possibility.
Soft Summer is the darkest of the Summer group. They also can manage black, better if they are naturally on the darker side. Charcoal is still the better choice for the face and skin tone.
Better than black
I agree with the convention that pants and shoes look best in the range of tones of the hair, not going darker than the darkest tone in the hair. You have many tones in your hair when you study the range from lightest to darkest or warmest to coolest. You still have a lot of choice.
Among the very liberating features of a colour-analyzed wardrobe is the mix and match. Everything works with everything else. Black gets in the way. Among colours that don’t meet its darkness and coldness, the black takes over. It looks aggressive and big. The rest of the attire, as beautiful and Season-perfect as it may be, will be ignored. Seems a shame. Rather than insisting on black, know your better-than. Charcoal, espresso, silver birch, steel blue, dark green, and many others are available and participate more happily to create a fully functional wardrobe.
Although black is often dominating, many Seasons tolerate a lot of darkness in ‘colour colours’. Navy and gray are especially accommodating. They get along among other Seasons’ colours even if they’re pretty close. They adapt better than black, look more creative, and are more flattering to the skin, hair, and cosmetics.