Copies clothing this person rejected in brown (5)
I believe the answer is:
sepia
'brown' is the definition.
(sepia is a kind of brown)
'copies clothing this person rejected' is the wordplay.
'copies' becomes 'apes' ('ape' can be a synonym of 'copy').
'clothing' is an insertion indicator (some letters cover up or clothe others).
'this person' becomes 'i'.
'rejected' shows that the letters should be reversed in order.
'apes' placed around 'i' is 'aipes'.
'aipes' back-to-front is 'SEPIA'.
'in' is the link.
(Other definitions for sepia that I've seen before include "Former photographic pigment" , "Brown colour of old photo" , "Reddish-brown colour - easy as pie" , "Colour of old photographs" , "Reddish brown -- ie sap (anag)" .)