Many people feared that the new millennium would cause black outs because of problems with electricity production. Black out: loss of electricity
What a beautiful car! I'm green with envy. Be green with envy: very, very jealous of another person's property
Don't rely on him under pressure in battle. He's yellow. Be yellow: be a coward
There is so much red tape that needs to be completed before adopting a baby. Red tape: bureaucracy
Jack Thomas was put on Hollywood's black list during the McArthy era. Black list: list of unwanted people
She was such a difficult child that her family always treated her like a black sheep. Black sheep: a minority in a small group, often considered "bad" by the majority of the group
Mr. Jackson is very important to the success of this program. Make sure to roll out the red carpet when he arrives. Roll out the red carpet: give the best treatment
We're looking for a new home in the green belt. Green belt: the countryside around a city
It's not quite as black and white as you think. Black and white: simple, clear and understandable
Try to cheer Susan up. She is feeling rather blue these days. Feel blue: depressed
I had to tell a white lie in order to get accepted into the program. White lie: small, insignificant lie
Jack gave me the green light on the project. Give the green light: approve a project or request