a black look 怒目而視
a gray area 灰色地帶（指介於兩個對立面之間的範疇）
a green thumb 精通園藝
black sheep 敗家子；不肖子；害群之馬
black tie 正式的
catch someone red-handed 逮個正著
cry blue murder 嘩然反對
get the green light 獲得許可
give someone the green light 准許某人做某事
golden opportunity 絕佳機會
in the black 有盈餘
in the red 虧損
once in a blue moon 罕見
out of the blue 突如其來；意外地
paint the town red 尋歡作樂
pot calling the kettle black 五十步笑百步
roll out the red carpet 盛大歡迎
white elephant 昂貴而無用的禮物
white lie 善意的謊言
yellow-bellied 膽怯的
black in the face 盛怒；滿臉怒容
blue in the face 精疲力盡、臉色鐵青；大發脾氣、氣急敗壞
brown-nose 馬屁精，諂媚者
give someone a black eye 把某人打得眼圈發青
green-eyed 眼紅；嫉妒的
one’s ears are red 困窘；難堪
one’s green eyes 貪婪滿胸
one’s green face 嚇出一身汗
one’s red eyes 怒火中燒
red-faced 臉紅
red-handed 當場被逮捕
someone has green face with green eyes 好色怕事
someone has red eyes on his green face 敢怒不敢言
with red hands 雙手染著血；犯殺人罪
in somebody’s black books 受某人輕視；失去某人之好感
look black at somebody 怒視某人(= give somebody a black look)
look blue(人)沮喪；(事態)不樂觀；不妙