Answer:

GRAY

Answer	Crossword Clue
GRAY	..... matter (brains)
GRAY	Black and white mix
GRAY	Drabble character Jane

GRAY	Gloomy
GRAY	Ashen
GRAY	Davis of note
GRAY	CSA color
GRAY	She's Sue Ellen
GRAY	Confederate army
GRAY	Grecian Formula target
GRAY	Blue opponent

GRAY	"Where ignorance is bliss, 'tis folly to be wise" poet
GRAY	Dreary
GRAY	Overcast
GRAY	Ambiguous, idiomatically
GRAY	Cloudy
GRAY	Henry who wrote a noted anatomy text
GRAY	Showing signs of age, perhaps
GRAY	Age, perhaps

GRAY	Civil War color
GRAY	Confederate color
GRAY	Not clear-cut
GRAY	Pre-dye shade, perhaps
GRAY	.. matter
GRAY	Battleship color
GRAY	Moral dilemma color
GRAY	Civil War soldier

GRAY	Like a rainy day
GRAY	It's often touched up
GRAY	Like the old mare
GRAY	Oscar Wilde's Dorian
GRAY	Like overcast weather
GRAY	Confederacy color
GRAY	Civil War side
GRAY	Black and white together

GRAY	Looking like rain
GRAY	Gloomy, weatherwise
GRAY	Like the old mare that "ain't what she used to be"
GRAY	Like an overcast sky
GRAY	Like gloomy skies