Crossword puzzle clue "most dark"

Source of "Say! In the dark? Here in the dark! Would you, could you, in the dark?"

"The most-played, most-imitated, most influential puzzler of all time," per the video game website IGN

"It builds strong bones, but who cares in this dark, dark world..."

Dark as dark can be

Dark purplish-brown to dark red

Irish singer whose most recent album is "Dark Sky Island"

Most dark

Most dark