Color Me Blue

The modern English word blue comes from Middle English bleu or blewe, from the Old French bleu, a word of Germanic origin, related to the Old High German word blao. In heraldry, the word azure is used for blue

In Japanese, a novice or inexperienced person is ao-kusai, literally they ‘smell of blue’.
In ancient Rome, public servants wore blue. Today, police and other public servants wear blue.
In Iran, blue is the color of mourning.
Blue was used as protection against witches, who supposedly disliked the color.
If you are “true blue,” you are loyal and faithful.
Blue stands for love, which is why a bride carries or wears something blue on her wedding day.
A room painted blue is said to be relaxing.
“Feeling blue” is feeling sad.
“Blue devils” are feelings of depression.
Something “out of the blue” is from an unknown source at an unexpected time.
A bluebook is a list of socially prominent people.
The first prize gets a blue ribbon.
A blue blood is a person of noble descent.
“Into the blue” means into the unknown.
A “bluenose” is a strict, puritanical person.
A “bluestocking” used to be a scholarly or highly knowledgeable woman.
The pharaohs of ancient Egypt wore blue for protection against evil.
The “blues” is a style of music derived from southern African-American secular songs. It influenced the development of rock, R&B, and country music.
Am I Blue song by Ray Charles
Blue Bayou is a song in Spanish and English by Linda Ronstadt
“Blue laws” are used to enforce moral standards.
A blue ribbon panel is a group of especially qualified people.