Hair colour (6)
'hair colour' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for auburn that I've seen before include "Goldsmith: 'Sweet . . . . . . loveliest village of the plain'" , "Of hair colour, reddish brown (6)" , "Reddish-brown, hair say" , "Dark coppery red" , "Shade of brown" .)
(Other definitions for ginger that I've seen before include "Fred Astaire's partner - Greer's gringo (anag)" , "Orange-brown" , "Red (of hair)" , "This 13 [SPICE]" , "Spicy root, often served with sushi" .)