Tips: 英语中表示颜色的词，常常有很多特殊的用法some special uses，而且要注意这些词汇的动词用法pay attention to the verbs.
Black 黑色
1. Black sheep 害群之马
He is the black sheep of his family.
他是个败家子。
英语中的害群之马其实是一只羊，但是我们可以用dark horse黑马来形容比赛中出人意料的参赛者。
2. Black out 失去知觉
My legs gave way and I blacked out.
我两腿一软昏了过去。
Black out相当于pass out昏厥
3. Blackout 停电
I hate suffering from a blackout when I have lots of work to do.
我恨透欧了工作量大的时候还停电。
Blackout相当于power failure断电
4. A black mark 污点
The incident left a black mark in his life.
这件事在他的生命中留下了不好的印记。
5. Black money 黑钱
The government says when it comes to black money，it is not a open-and-shut case.
政府认为谈及到黑钱的时候，事情便不在简单了。
Green 绿色
1. Give somebody the green light 批准
My boss gave me the green light to implement the new plan.
老板批准我开始落实新计划。
2. Be green with envy 嫉妒
She was green with envy when she saw her ex-boyfriend with another girl.
她看到前男友和别的女孩在一起嫉妒得要命。
3. the green-eyed monster 爱嫉妒的人
He looks gentle and humble but the green-eyed monster.
他看上去既绅士有谦逊，但却是个爱妒忌的人。
4. Green hand
I am not a green hand anymore. Do not bully me！
我不再是新手，别欺负我！
Green hand有点类似于fresh fish 菜鸟
Blue 蓝色
1. Out of the blue 突如其来
I have not heared a word from him for 10 years，and one day he just showed up out of the blue.
他一连十年音信全无，突然之间就出现了。
2. Once in a blue moon 非常罕见
The liar told the truth instead of tell a lie once in a blue moon.
爱说谎的人竟然破天荒地说出了事实。
3. Blue in the face 脸色发青
You can try to persuade me until you are blue in the face，but I will not change my mind.
你就算说得筋疲力竭我也不会改变主意。
4. Baby blue 产后忧郁
She is suffering from baby blue.
她正在经历产后抑郁。
White 白色
1. White lie 善意的谎言
A white lie is a kind lie and may be far more innocuous.
这样的谎言可能出于善意并且无伤大雅。
2. As white as a sheet 面色苍白
She was as white as a sheet when she heard the news.
她听到消息后面色惨白。
3. White bread 白面包
What kind of bread，white or wheat？
卖三明治的人会问你：要白面包还是全麦面包？
4. White knuckle 历险
The roller coaster was so scary that I had to white knuckle the entire ride.
云霄飞车太恐怖了，吓得我我从头至尾一直胆战心惊。
Red 红色
1. Paint the town red 玩得开心
We went out last night and painted the town red.
我们昨晚出去玩得很嗨。
2. Be caught red-handed 被抓个现行
He was caught red-handed while cheating on the exam.
他考试时作弊被当场抓到。
3. Run a red light 闯红灯
I got a ticket yesterday for running a red light.
我昨天因为闯红灯吃了发单。
4. Red tape 官僚羁绊
The mayor promised to eliminate red tape that hampers business development.
市长保证要根除阻碍商业发展的官僚障碍。
Yellow 黄色
1. Yellow-belly 胆小鬼
Everybody knows he is a yellow-belly，so nobody likes him.
所有人都知道他是个胆小鬼，没人喜欢他。
2. Yellow press 黄色报刊
The yellow press cannot be punished in our country.
黄色报刊在我国被禁止出版部发行。
对比记忆：Blue movie色情电影
3. Yellow dog 卑鄙小人
Do not be a yellow dog. It is too annoying.
不要做卑鄙小人，惹人厌。
对比记忆：kiss ass 马屁精 bad ass 小混蛋