Once upon a time, there was a very slim village girl, the prettiest, but the most distant and coolest that had ever been seen.
The little girl's grandmother (who happened to live in another village) had made her a little gray hood, which went so well with her dull character that everywhere she went by the name of Little Gray Riding Hood.

One day her mother, who had just baked some cakes, said to Little Gray Riding Hood: "Go and see how your grandmother is, for I have been told that she is ill. Take her a cake and this little pot of butter. You can eat with her, my child."
"Oh, no, mother," said Little Gray Riding Hood. "I'll take it to her but I won't eat it; I am not ill."

No sooner said than done and Little Gray Riding Hood went her way through the wood. There she met the big bad wolf.

"Where are you going, my child?" the wolf asked.

"That's none of your business," said Little Gray Riding Hood. "Move, you ...." And she used a word that we cannot possibly repeat here.

As everybody knew Little Gray Riding Hood, the wolf guessed that she was on the way to her grandmother. He ran in front, ate the grandmother, put on her nightcap and waited in bed.

Little Gray Riding Hood arrived and said: "Granny, my mom says you're ill and that you should eat this."

She rammed the food into the wolf's mouth so fast and so hard that he choked and died on the spot.

"Well done," said Little Gray Riding Hood. "That's what happens to people who eat to much and become fat. Look at me..., I'm slim and I am the most beautiful girl in the world."

Although you might not like it, for Little Gray Riding Hood this was a most happy conclusion of her narrative. When control is exercised, behavior is void of emotions and feelings.

At times I feel that the world is a dangerous place.
I have to be prepared, be in the know and foresee the dangers.
When I'm prepared, I'm in control.

Sometimes behavior becomes very functional and is triggered by situations and circumstances. When control is exercised, behavior is void of emotions and feelings.
As psychiatrist Thomas Szasz wrote in the chapter 'Control and Self-Control' of his book The Second Sin: "Addiction, obesity, starvation (anorexia nervosa) are political problems, not psychiatric: each condenses and expresses a contest between the individual and some other person or persons in his environment over the control of the individual's body."
The same is true for controlled consumer behavior.

Psychologically, this controlled behavior can be a way to avoid confrontation with (one's own) emotions and passions.

Void of emotions and feelings? Black is indeed the colour of objects that absorb nearly all light of all visible wavelengths; it is the absence of colour.
this was certainly the main reason why we chose black to stand for control. Of course, the colour black has other "meanings" but they all bring us round to control. Black expresses a menace or angry discontent and we "give someone a black look'. A "blacklist" is a list of persons or organisations that have incurred disapproval or suspicion or are to be boycotted or otherwise penalised.
A "black book" contains a list of persons or organisations to blacklist. In the days of Mussolini, "black shirts" were members of the fascist party, a party that controlled daily life in Italy.

Black is probably the colour that is most difficult to use creatively. Besides generally negative emotions, black evokes reserve and even aloofness; the reserve and aloofness of a higher class or a class apart. The "absence of colour" indeed denotes that one does not need colours to "distinguish" oneself; here the absence of colout becomes a sign of personal (private) superiority that does not need exterior heightening.