Associating the color GREEN with both pig or dog snot and gonorrheal gleet in this glyph caused the entire society of Japan to deny for centuries that the color green even existed, calling it 'blue' instead, until the fundamental meanings of these elements were largely forgotten by the population and folks began wondering, why not use the color green in the language as do most other people on Earth?
　「Loose dripping stinky and sticky threads」that「ooze」and in particular, the GREEN color that infected mucous membranes most famously take on when a mammal (such as a pig) has a chronic infection (green snot is caused generally by bacteria colonizing the sinuses), or, the GREEN color of discharged gleet during a dose of gonorrhea.
　The color green later was applied to GREENERY, as it has in English, perhaps due to use in herbal poultices, and to VEGETABLE, VEGETATION, and a VEGETATIVE STATE (being knocked out of commission). Note that「ejaculations of pig snout sticky liquid」also refers to this same color GREEN, since in all likelihood the same infection that has colonized the mucus of the nasal passages will also colonize the mucus of the genitals:
　「…nevertheless the following viral diseases may be present [in semen], particularly if the boar is ill or at the early acute stage of infection at the time of collection: [viruses listed] Many other viruses have been detected in semen but their significance is not known. Some important bacterial diseases can also be spread in semen during service ['service' is the euphemism for schtupping (ejaculation into a birth canal or other attainable orifice): see 仕], notably brucellosis and leptospirosis.」
　　[　https://www.thepigsite.com/genetics-and-reproduction/insemination/facts-about-semen 2023-05-18　]　
　English words「colony, colonize」etc., refer to the process of bacteria establishing a living space (a settlement) within the large intestine, the 'colon,' feeding off the resources (feces) of a host animal, analogous to how some kings invaded other lands and established settlements in order to feed off the resources of the host territories, also known as parasitism.
　In its most common gaseous state, CHLORINE is yellowish-green and TOXIC, not unlike slimy bacterial infected mucus sometimes found coating the sinuses or glans.
　Note that the following colors are all associated with the human body and its various emissions or conditions: black (黒, 黑). Purple (紫). Blue (靑,青). Green (緑,綠). Yellow (黄,黃). Orange (橙). Red (赤). And white (白).

Modern definitions (that generally disregard history) …excluding politically incorrect concepts and other meanings deemed offensive today; may list only pigeonholed definitions, euphemisms, or meaningless mnemonics)
Chinese: Japanese variant of 綠|绿
Japanese: green, greenery
Unihan extended: green; chlorine
EDRDG: green