Matching Pairs IDIOMS. COLORSOnline version IDIOMS. COLORS by María Marteles 1 Gray area 2 To have a green thumb 3 To tell a white lie 4 To be tickled pink 5 Caught red-handed 6 To be a black sheep 7 Take the red eye 8 Once in a blue moon 9 Green with envy 10 Out of the blue very rarely a late night flight that arrives early in the morning to be extremely pleased to catch someone in the act of doing something something that is unclear, undefined randomly, without warning, surprisingly a small lie that is told to be polite or avoid hurting someone’s feelings to be skilled at gardening to be very jealous, envious to be the outcast, odd one out, unlike the others