Brown hue (5)
I believe the answer is:
sepia
'brown hue' is the definition.
(I've seen this in another clue)
This is the entire clue.
(Other definitions for sepia that I've seen before include "Reddish-brown colour - easy as pie" , "Colour from cuttlefish ink" , "Brown tint" , "Brown tone associated with old photographs" , "Sort of drawing" .)