But, alas, I'm not here to talk to you about the colour red. I'm here to talk about the colour green, in all of its multi-faceted confusion.
What do you think of when I say green?
Spring and renewal? Decay and sickness? With envy? Maybe you think of "being green" or environmentally friendly (thanks Green Party and Greepeace). Or maybe of wealth, "I'm in the green!" (thanks, American dollar). Also, green is the sign of being in the clear (stoplights, stock-market, etc.) as opposed to "being in the red" (bad). But, again, I'm not here to talk about red.
None of you would be wrong. It turns out that green, from what I can tell, is by far the most confusing colour ever. It represents, in some cases, complete, fundamental opposites.
It may be pretty obvious to you why green is associated with renewal and cleanliness - and if it isn't obvious, let me explain. In spring, things (RE: plants) turn green again, becoming fresh and new. That's it. Glad I could clear that up for you.
Now, while it may also seem obvious about green being associated with death, decay and sickness, not all of it is as clear as you might think. The obvious parts are that a decaying anything turns green in some way - old fruit goes green (and fuzzy), etc. When someone is sick, they take on a greenish pallor. Seems straightforward, right? Well, here is where things take a turn for the creepy and weird.
One of the reasons green is associated with death isn't just because of the sickness pallor or mould, but because of graveyards.
Have you ever seen a horror film with a scene set in graveyard and it's all misty? Well picture that, but in the moonlight, it was green. I'm not kidding. The light reflected off of the stink-gases were literally cause a greenish glow around the graveyard. Thus, green was forever associated with death, decay, sickness and technically, the occult.
So, I hear you cry, from whence does the term "green with envy" come? Well, now that you know all that stuff above, it's relatively simple. There are a few explanations for the use of green's association with envy, some biblical, some Shakespearian. All pretty much the same.
In the Bible, they're pretty clear that envy (or "coveting") is a pretty bad thing. In the Middle Eastern region, stemming from ancient times, given that light-coloured eyed people were quite rare, they were said to carry the Evil Eye[3]. So, anyone with green or blue eyes was bad luck. There was also an original Hebrew term that spawned the modern "green with envy" and that was horik panav ke-neged which meant "to be green with anger at someone"[4]. The Greeks believed envy was a result of an overproduction of bile, leading to a greenish pallor in the skin during sickness and interchanged the words "green" and "pale" to mean sickly[5]. The European medical idea of the Humours didn't differ much from this. Seeing as envy was seen as a sickness, they associated it with the same colour. Shakespeare even anthropomorphised it in Othello, “O! Beware my lord, of jealousy; it is the green-ey’d monster which doth mock the meat it feeds on". And in Anthony and Cleopatra, "…and Lepidus, since Pompey's feast, as Menas says, is troubled with the green sickness". And in The Merchant of Venice, "How all the other passions fleet to air, as doubtful thoughts and rash embraced despair and shuddering fear and green-eyed jealousy".
There you have it. green represents life and death, wellness and sickness, renewal and decay. And envy. See, I even did research. There. Everything you (n)ever wanted to learn about green, but were too afraid to ask.