Heni's Note Book: [Idiom] Say It with Colours

What's your favourite colour? Red, black, blue, or pink? Besides using your favourite colour as the main consideration in buying something, you can use your favourite colour to express your feeling or thought about something. Please check these English idioms related with colours:

Black
	Black and white	When it is very clear who or what is right and wrong, then the situation is black and white.
	Black as Newgate's knocker	(UK) If things are as black as Newgate's knocker, they are very bad. Newgate was an infamous prison in England, so its door knocker meant trouble.
	Black hole	If there is a black hole in financial accounts, money has disappeared.
	Black sheep	Someone who is the black sheep doesn't fit into a group or family because their behaviour or character is not good enough.
	Blackball	If you vote against allowing someone to be a member of an organization or group, you are blackballing him or her.
	Black mood	To be in a black mood means to be irritable, angry or even depressed.
	In the black	To say that a person or organization is in the black means that they are financially sound, have a positive balance on their account and that they owe no money.
	Black market	The black market refers to the illegal buying and selling of goods or currencies.
	Black gold	Black gold refers to the black colour and high value of oil.
	Black tie event	This expression refers to a formal event at which men are required to wear a dinner jacket, or tuxedo, and a black bow tie.

Blue
	Blue blood	Someone with blue blood is royalty.
	Blue-eyed boy	Someone's blue-eyed boy is their favourite person.
	Blue in the face	If you do something until you're blue in the face, you try unsuccessfully to do something for a very long time.
	Out of the blue	If something happens out of the blue, it happens unexpectedly.

Brown
	Brown nose	When someone tries to make themselves popular with somebody, usually in a position of authority, especially by flattering them, they are brown nosing.
	Brownie points	If you try to earn Brownie points with someone, you do things you know will please them.
	Brown as a berry	To say that someone is brown as a berry means that they are very tanned.
	Browned off	To be browned off means to be bored, fed up or disheartened.

Gold
	Golden handshake	A golden handshake is a payment made to someone to get them to leave their job. A golden handshake is a generous sum of money given to a person when they leave a company or retire (sometimes given to encourage early retirement).
	Golden rule	The golden rule is the most essential or fundamental rule associated with something.
	Golden touch	Someone with a golden touch can make money from or be successful at anything they do.
	Golden opportunity	A golden opportunity is a favourable time or excellent occasion which should not be missed.

Green
	Green around the gills	If someone looks green around the gills, they look ill.
	Green fingers	(UK) Someone with green fingers has a talent for gardening.
	Green light	If you are given the green light, you are given approval to do something.
	Green thumb	(USA) Someone with a talent for gardening has a green thumb.
	Green with envy	If you are green with envy, you are very jealous.
	Green-eyed monster	The green-eyed monster is an allegorical phrase for somebody's strong jealousy
	Greenhorn	A greenhorn or someone who is described simply as green lacks the relevant experience and knowledge for their job or task

Grey
	Grey area	A grey/gray area is one where there is no clear right or wrong
	Grey Cardinal	Someone who is a Grey Cardinal exerts power behind the scenes, without drawing attention to himself or herself.
	Grey matter	Grey/gray matter is the human brain.
	Grey pound	(UK) In the UK, the grey pound is an idiom for the economic power of elderly people.
	Grey suits	The men in grey suits are people who have a lot of power in business or politics, but aren't well-known or charismatic.
	Grey existence	To have a grey existence is to lead a dull, monotonous life.