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