colors

Some colors are used to describe or convey emotion, or other attributes--
red--( angry ) He saw red, he was so angry.
red--( embarrassed ) His face turned red with embarrassment.
yellow--( cowardice ) They accused him of being yellow, but he claimed that he wasn't a coward.
green--( envy, jealousy ) She was green with envy.
green--( nausea ) He felt so ill that he turned green.
blue--( sad ) He was blue for weeks when she left.
purple--( royalty) She often dreamed of one day wearing the purple.
purple--( rage) His face was purple with rage.
pink--( health)  He has been ill, but now he's in the pink.
black--( gloom and doom ) He was in a black mood, and nothing could cheer him.
black--( mourning )  They wore black for a year after the funeral.
brown--( depressed )  He has been in a brown study ever since he lost his job.
white--( fear or shock ) When he heard the noise, he turned white as a sheet.
white--( purity, virginity )  The bride wore white, even though it was her third wedding.

Colors can be political or historical--
red--a communist
pink--a communist sympathizer, or "pinko"
orange--an Irish person who thinks Ireland should remain with Great Britain
white Russian--a Russian who thought that the Russian monarchy should be restored, after 1917
green--a member of the ecology party
brownshirts--( fascists ) They hid indoors when the brownshirts marched through the town.

Colors can be about economics--
red--( a financial loss ) Our company has been in the red for weeks--we are losing money.
black--( a financial gain ) We are finally in the black, and are making a profit.

Colors may refer to things--
black and white--( in print or writing )  Make sure you have it in black and white.
a black and white--a police car
There's a black and white parked around the corner.
black and white--a chocolate and vanilla shake
I'd like a black and white shake and an order of fries.
black and white--overly simple philosophy
It's not all as as simple as black and white.
green--( money ) When he sees the green, he'll make a deal.
greens--( leafy vegetables ) Eat your greens; they're good for you.
pinks--( flowers )  She planted pinks and  zinnias.
orange-- ( an orange ) Could we have some orange juice?

Colors may give directions--
red--( stop )  You didn't stop on the red!
green--( go ) It's green! Let's go!
yellow-- ( caution or slow ) It's yellow; slow down.
orange--( detour or construction ) I can't see what they're doing, but there's an orange sign.

Colors may warn--
red--( urgent ) The letter said "final notice", and was printed on red paper.
yellow--( illness)  Ships still carry a yellow flag to warn of illness.
black--( plague or serious illness ) The black flag means that there is plague aboard that ship.