People use colors to express their feelings and describe their world. （1）

B

B

Let's see if we can figure out where they originated.
   Black sheep of the family
   The phrase refers to a member of a family or a group who is in disgrace （失寵）.It probably comes from the days when，in a group of sheep，the black ones were worth less than the white ones at market because their wool could not be dyed （染色） into different colors. （2）

A

A

Green with envy
   When your friend shows up with the hottest new video game in town，you might feel this way. （3）

G

G

It was the Greeks who connected it with sickness.They thought that when a person was ill or envious，his or her body produced too much bile （膽汁），giving his or her skin a greenish color.
   True blue
   Is your best friend "true blue"？No，this doesn't refer to a dye job on his hair. （4）

E

E

Back when all color dyes came from natural sources，such as berries and leaves，blue was the most difficult color to produce and often faded quickly.Finally，during the Middle Ages，an English town became famous for a blue dye that produced a nice，rich blue that didn't fade after just a few washings.This reliable color became known as "true blue".
   Royal purple
   Purple is a fairly popular color.But throughout history，it was reserved for royalty and important members of the church.Purple was once the most expensive dye in the world. （5）

F

F

The resulting purple-colored cloth was costly，and only the richest people could afford to buy it.

A.This made the black sheep an unwelcome member.
B.Many color-related phrases are a common part of our speech.
C.A person who was envious would make him look green.
D.Almost everyone at some time or another has "the blues".
E.It means that he is honest，faithful，and reliable.
F.The process of collecting the dye and processing it was long and complex.
G.Writers such as Shakespeare used the color green to represent envy.