A shade sorrowful (4)

I believe the answer is:

blue

I believe this clue is a double definition.

'a shade' is the first definition.
(I know that blue is a type of shade)

'sorrowful' is the second definition.
(thesaurus)

(Other definitions for blue that I've seen before include "See 7 Across" , "Turquoise, say" , "Colour of low spirits" , "Conservative > depressed" , "despondent" .)

I've seen this clue in The Globe and Mail.

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