Shade — ie asp (anag) (5)

I believe the answer is:

sepia

(Other definitions for sepia that I've seen before include "Colour from cuttlefish ink" , "Reddish-brown; cuttlefish ink" , "Old drawing" , "Brownish tone associated with old photographs" , "Colour of old photographs" .)

I've seen this clue in The Guardian.

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