This blue shade(JPY 1,890; about $20) makes food look dull and boring so you loose your appetite. It comes from Japan. The idea is that the color blue is the least appetizing color in the spectrum.
"It stimulates the physiological circulation of the human that it is appetite the effect of red approaches the brain among non consciousness, would like to eat generally, that it increases. It is said that the appetite it calms the excitation of the brain above that would like to eat blue color conversely, is held down. Those where the color physiology is applied are these sunglasses. ¡°You drink continuously¡± if and so on poor even with the person where ¡°it moves¡±, this because just you apply with easily is, it is easy to continue without being chased in stress, probably will be."