"the powers of darkness"

"he moved off into the darkness"

"he was in the dark concerning their intentions"
"his lectures dispelled the darkness"

"sitting in a dark corner"
"a dark day"
"dark shadows"
"dark as the inside of a black cat"

"dark green"
"dark glasses"
"dark colors like wine red or navy blue"

"dark eyes"

"black deeds"
"a black lie"
"his black heart has concocted yet another black deed"
"Darth Vader of the dark side"
"a dark purpose"
"dark undercurrents of ethnic hostility"
"the scheme of some sinister intelligence bent on punishing him"

"keep it dark"

"a dark scowl"
"the proverbially dour New England Puritan"
"a glum, hopeless shrug"
"he sat in moody silence"
"a morose and unsociable manner"
"a saturnine, almost misanthropic young genius"
"a sour temper"
"a sullen crowd"

"this benighted country"
"benighted ages of barbarism and superstition"
"the dark ages"
"a dark age in the history of education"

"much that was dark is now quite clear to me"
"those who do not appreciate Kafka's work say his style is obscure"

"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"

"National Association for the Advancement of Colored People"
"dark-skinned peoples"

"the theater is dark on Mondays"