Call black white and white black 颠倒是非 An evening red and a morning grey, is a sign of a fair day. 晚霞红如火,晓色青如灰,定是晴朗天。Indigo blue is extract from the indigo plant, but is bluer than the plant it comes from. 青出于蓝而胜于蓝 After black clouds, clear weather. 否极泰来After black clouds comes clear weather“雨过天青”,喻情况由坏转好。Red clouds in the east,rain the next day。“东有火烧云,次日雨来临”,Care brings grey hair. 忧虑催人老。A fox may grow grey, but never good狐狸会变,但本性难移At night, all cats are grey. 猫在夜晚皆灰色(丑妍暗中难分辨)。They that marry in green, their sorrow is soon seen.年纪轻轻就结婚,为时不久便悔恨a white lie善意的谎言 a black sheep害群之马 black and blue 青一块紫一块(鼻青脸肿) red eye 一种便宜的威士忌酒;照片中出现的红眼现象 pink eye 红眼病 a black eye被打青的眼睛 white elephant 大而无用的东西 green hand 新手 feel blue 感觉忧郁 in the pink : 非常健康 yellow journalism 耸人听闻的报道 yellow dog 忘恩负义之徒 red flag 让人生气的东西 black dog 忧郁、不开心的人 black letter day 倒霉的一天 black smith 铁匠 black leg 骗子green light : 许可,同意 red tape : 指手续繁杂,办事拖拉,不讲实际的坏风气 see red : 发怒,冒火 in the red : 亏损,负债 a red letter day : 重大,重要的日子