Envy is one of the emotions human beings experience. When a person is unable to achieve something which someone known to him has achieved, he feels Envy. Only the saints and yogis may not be infected with this malady.
In every culture, colors are generally associated with emotions. Red is generally similar to anger, white is for peace and black is the colour of mourning in many cultures.
Although green colour has positive traits as it is associated with greenery in Nature. But in Europe and United States a phrase is very popular. It is “Green with Envy”.
Origin of the phrase has its roots in Greek psychology. There green complexion is associated with sickness, jealousy. It is said that when a person feels Envy, bile production increase. As the bile is greenish is hue, it imparts a greenish coloration to the skin.
William Shakespeare used this phrase as Othello beseeches his lord as “Beware, my lord, of jealousy; it is the green-eyed monster which doth mock the meat it feeds on …”
Thus like other negative emotions, Envy is also harmful for health.
https://images.app.goo.gl/Qu2AdGpDAcv4j2z27Green with envy
This link gives a beautiful message to not become green with envy but become green or optimistic that the thing is achievable.