English Idioms About “Time”
Idiom: Rome wasn’t built in a day
Meaning: Said to emphasize that great work takes time to do. Nothing of importance can be done in a short period of time.
Example: Don’t expect immediate outstanding earnings fom your new buisiness. Rome wasn’t built in a day.

English Idioms About “Colors”
Idiom: Green light
Meaning: Permission to go ahead with something such as a project.
Example: As a result of the severe drought, the government has given the green light for importing cereals.

English Idioms About “War”
Idiom: Ride shotgun
Meaning: To ride shotgun means to sit in the front passenger seat of a vehicle during a trip. Figuratively, the phrase refers to the support or aid given to someone in a situation or project. The expression riding shotgun is derived from shotgun messenger, a colloquial term for express messenger. A special armed employee of the express service using the stage for transportation of bullion or cash would sit beside the driver, carrying a short shotgun (or alternatively a rifle), to provide an armed response in case of threat to the cargo.
Example: Would you like to come to the party and ride shotgun? We really need your help!