Envy is often associated with the color green, as in "green with envy", and yellow. Yellow is the color of ambivalence and contradiction; a color associated with optimism and amusement; but also with betrayal, duplicity, and jealousy. The phrase "green-eyed monster" refers to an individual whose current actions appear motivated by jealousy not envy. This is based on a line from Shakespeare's "Othello". Shakespeare mentions it also in "The Merchant of Venice" when Portia states: "How all the other passions fleet to air, as doubtful thoughts and rash embraced despair and shuddering fear and green-eyed jealousy!" The character Envy from Fullmetal
Green-eyed tree frog up for their lack of a neck. This eye feature allows them to see everything around them. The color scheme of the green-eyed tree frog is to camouflage them from predators. Frogs with bright colors are alerting predators of their poisonous nature. Described as "Hyla serrata" by Andersson in 1916, this species was subsequently brought into synonymy with "Litoria genimaculata". In 2010, it was removed from synonymy and is regarded as a separate species from its New Guinea congener. The specific epithet, "serrata", refers to the serrated skin flaps that are located along its legs. Coloration is variable. While dark