Yellow

Yellow is a bright, cheerful color, often associated with happiness and peace.

In the English language, yellow has traditionally been associated with jaundice and cowardice. In American slang, a coward is said to be "yellowbellied" or "yellow."

Near the end of the 18th century, the color yellow was often associated with mental illness, specifically including insanity, and with other sorts of mental problems (e.g. depravity). Examples include The Yellow Book, The Yellow Wallpaper, The King in Yellow, and The Yellow Sign.

In China, yellow is associated with prosperity, and also a "Yellow Movie" means a pornographic film; contrast "blue movie".

Because it is similar to the gold color and precious metals such as gold or bronze, yellow is associated with coinage and bullion.

"Yellow journalism" was sensationalist journalism that distorts, exaggerates, or exploits news to maximize profit. The term came from Joseph Pulitzer's New York World and William Randolph Hearst's New York Journal American, who engaged in sensational reporting during the late 19th and early 20th century, most famously during the Spanish-American War. The term was derived from the color comic strip The Yellow Kid, which appeared in both papers. - From Wikipedia