Golden brown (6)
I believe the answer is:
auburn
'golden brown' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for auburn that I've seen before include "Golden" , "Of hair colour, reddish brown (6)" , "Goldsmith: 'Sweet . . . . . . loveliest village of the plain'" , "Reddish-brown, hair say" , "Shade of brown" .)