Fashion shade (4)
I believe the answer is:
ecru
'fashion shade' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for ecru that I've seen before include "Light fawn colour" , "Greyish-yellow colour" , "Bleached linen colour" , "Shade of unbleached linen" , "Strange cure for a colour" .)