Synonyms : olive drab

Example : Her drab personality.
Life was drab compared with the more exciting life style overseas.
A series of dreary dinner parties.

Synonyms : dreary

Example : Drab faded curtains.
Sober Puritan grey.
Children in somber brown clothes.

Synonyms : sober, somber, sombre

Synonyms : olive-drab

Example : A blue day.
The dark days of the war.
A week of rainy depressing weather.
A disconsolate winter landscape.
The first dismal dispiriting days of November.
A dark gloomy day.
Grim rainy weather.

Synonyms : blue, dark, dingy, disconsolate, dismal, drear, dreary, gloomy, grim, sorry