Brown colour (8)
'brown colour' is the definition.
(I've seen this before)
This is all the clue.
(Other definitions for tan that I've seen before include "Yellowish brown" , "Make black and blue" , "Turn hide into leather" , "Bronze" , "Skin colour after exposure to ultraviolet rays" .)
(Other definitions for coffee that I've seen before include "Barista's product" , "Breakfast drink" , "Cappuccino or espresso, say" , "Eg, espresso" , "Common drink" .)
(Other definitions for chestnut that I've seen before include "Dark golden-brown horse" , "Old story" , "Golden-brown or reddish-brown horse" , "''Underneath the spreading . . . . . . . . tree''" , "Hunt sect behind a big tree" .)