all of sudden
out of blue
angry
to see red
sad
to feel blue
right or wrong
black and white
pass out, lose awareness
black-out
jealous
green with envy
follow the trend, the majority
go with the flow
celebrate
paint the town red
different from the others, not doing the same
black sheep
harmless untruth :D
white lie
to give permission
to give a green light
kind, generous and compassionate
to have a heart of gold
extremely happy, delighted
tickled pink
to be in debt, losing money
in the red
business operating outside the legal system
black market
the moral principle of treating others as you would want to be treated yourself
golden rule
every difficult, sad, or unpleasant situation has a hopeful, positive, or advantageous aspect to it
every cloud has a silver lining
something happens very rarely, infrequently, or almost never
once in a blue moon
someone was born into a wealthy, privileged, or high-status family
born with a silver spoon
to be fond of gardening
green fingers
to be in a very good condition (health and physique)
to be in the pink
rule, or concept that is not clearly defined, leaving it hard to categorize as strictly right or wrong, legal or illegal, or black or white
grey area
exhausted and speechless, due to excessive anger, physical effort
blue in the face
jealousy
the green-eyed monster
to treat someone like royalty
to roll out the red carpet