While not the most appetizing, elements today are apparently「piled on top」or「extracted from, caused by orgy」「plugged orifice emissions」to mean both HIGH-PITCHED SHRILL SCREAMING, and, a DULL YELLOW referring to the color of pus extracted from a cyst, pimple, boil, festering sores, etc. (some fonts display the「extracted」element, others「plugged orifice」). In Chinese also refers to PORNOGRAPHY due to elements as「cooperation and piled one on another upward thrusting penises plugging orifices with emissions」that also means SQUEEZE OR PUSH THROUGH (can't imagine why?).「Yellow Physiological Effect: Yellow has proven to stimulate the brain. This stimulation can make you more alert and decisive. This color makes muscles more energetic and activates the lymph system. Psychological Effect:…a dull yellow can bring on feelings of fear.」
　　[　http://www.people.vcu.edu/~djbromle/color-theory/color01/coloreffects/yellow.html 2023-05-17　]　 perhaps because dull yellow is the color of pus and infection, generally. Exactly why in ancient times the color YELLOW became associated with cowardice, fear, and caution is unclear, other than because it is the color of a raging infection.
　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).
　「Like humans but unlike chimps and most other animals, bonobos separate sex from reproduction. They seem to treat sex as a pleasurable activity, and they rely on it as a sort of social glue, to make or break all sorts of relationships. 'Ancestral humans behaved like this,' proposes Frans de Waal, an ethologist at the Yerkes Regional Primate Research Center at Emory University. 'Later, when we developed the family system, the use of sex for this sort of purpose became more limited, mainly occurring within families [i.e., incest]. A lot of the things we see, like pedophilia and homosexuality, may be leftovers that some now consider unacceptable in our particular society.' 」
　　[　https://www.discovermagazine.com/mind/casual-sex-play-common-among-bonobos 2023-05-14　]　

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: yellow; pornographic; to fall through
Japanese: yellow, yolk of an egg, yellowish, tint, to turn, to yellow with age, phosphorus, high-pitched, shrill
Unihan extended: yellow
EDRDG: yellow

Used within names (nanori)
うい　･　れい