Well yes, even if this is part of the “strange but true” news, there would be a color capable of reducing the emotional hunger appetite, because it reduces stress. The model Kendall Jenner would have used it , and the news leaping to the headlines would have dusted off a 1979 study in which they talked about chromotherapy to reduce appetite, and in particular of a color capable of reducing anxiety and stress and making people eat automatically Less.
What color is it, will you tell yourself? Well, it’s a particular shade of pink, Baker-Miller Pink, defined as “the pink with calming power” thanks to observational studies conducted by Dr. Schauss, a scientist. Who, after having studied chromotherapy for a long time in the 1960s, discovered that among many colors this particular type of pink (click here to understand the hue) was able to induce relaxation in all the subjects studied. 

Not only that: Schauss had  some cells in a prison where the most dangerous elements for the other prisoners were kept in this color, then called pink P-618 . The result was that their level of aggression was significantly reduced. Color would have the same powers as a calming drug, as long as you observe it for no less than 15 minutes, for example by looking at a postcard or a colored wall.
It is also known that this color should not be used at all in gyms: athletes experience a reduction in strength in front of the Baker-Miller Pink. 
What does emotional hunger have to do with it?
It has something to do with it, because years later the  US Naval Office of Research in Washingtonanalyzed 1,700 subjects to prove that the color reduced the stress levels in the blood. However, the researchers discovered a massive side effect. In fact, this rose is a powerful anti-hunger: it reduces the appetite induced by emotional or nervous hunger.