Colour of Victorian photographs (5)

I believe the answer is:

sepia

(Other definitions for sepia that I've seen before include "Brown pigment produced from cuttlefish ink" , "Reddish-brown; cuttlefish ink" , "A greyish brown" , "Rich reddish-brown colour" , "Pigment obtained from cuttlefish ink" .)

I've seen this clue in The Guardian.

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