Idioms with Colours

Here are some examples

Red
I'm seeing red.
If you keep spending your money like this you will be soon in the red
Don't mention Tom's promotion to Mike. It would be like a red flag to a bull!

Blue
It came out of the blue!
I'm blue today
He's the director's blue-eyed boy!

Green
I'm green with envy.
We're ready to launch the campaign as soon as we get the green light.
Jake's garden is beautiful, he really does have green-fingers.

Black
I'm in a black mood today because he forgot my birthday.
He bought it in the black market
Last night, he blacked out

HAVE YOU SEEN LITERAL EXPLANATION OF IDIOMS?

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Usage

Are you fed up with being short of money all the time?

We want to know your opinion

What's an Idiom?

Idioms are semi-fixed expressions used to create images. In the idiom above, for example, there are no real cats or bags involved. The image is of someone getting a surprise - after all you don't exactly expect to open a bag and find a cat jump out. The idiom originates from the trick of substituting a cat for a pig at markets. If you let the cat out of the bag you disclosed the trick or secret - and avoided buying a pig in a poke, another word for bag. Example: Why did you let the cat out of the bag? Now everyone knows!
Nice and colourfulSome idioms are nice and colourful; others are more idiotic than idiomatic. Don't underestimate idioms though - you'll hear them used a lot in business, so get used to them. Even if you don't use idioms yourself, you need to understand them. Sometimes they'll be clear from the context, sometimes not.

Extract from knowhowe.wetpaint.com/page/Idiomatic+English