green belt
give someone/ get the green light
be/ go/ turn/ make someone green with envy
have a green thumb
green about the gills
the green-eyed monster
a grey area
grey matter
men in grey suits
be in the pink
see pink elephants
be tickled pink
brownie points
turn/ go/ be as red as a beet
be in the red
catch somebody red-handed
roll out/ put down/ lay out the red carpet
a red herring
a red letter day
red tape
see red
paint the town red
yellow streak
grow grey-haired

Exercise 1: Collocation: Match these colors with their appropriate noun combination.
Pink
Green
Grey
Red
Yellow

Carpet
Matter
Elephant
Streak
Thumb

Exercise 2: Fill in these sentences with the above expressions:

They rolled out the _____________ for two special guests.
This is a complicated problem. You need to use your ______________
If you want any gardening tips, you need to ask John. He has a _______________. All the tomatoes he has grrown are big, red and juicy.
John saw ________________ again last night. He kept calling his exgirlfriend’s name last night instead of mine.
He really showed his ______________ when confronted by an elephant. He wetted his pants and ran for his dear life.

Exercise 3: Decide if these sentences are True , False or Not Given

Jill’s father and Jack hit it off from the beginning.
Jack met Jill outside of the city.
Jill was a beautiful girl.
Jack did many illegal acts to please Jill’s father.
Jack and Jill had a very big celebration the day when he proposed to her.