this idiom means "soooometimes, rarely"
once in a blue moon
become very angry
see red
this idiom means "to owe money"
in the red
this idiom means "to reveal your real character"
true colours
be a good gardener
have a green thumb
very jealous
green with envy
catch sb with smth he/she has done
catch sb red-handed
be in a terrible mood
have the blues
suddenly, unexpectedly
out of the blue
say untrue things because you don't want to hurt sb with the truth
white lie
be born into a rich family
born with a silver spoon in one's mouth
very different from others, of a bad quality
black sheep
hurt beaten and injured
black and blue
very shy
beet red
not knowing anything
in the dark
incredible chance
golden opprotunity
