Brownish gray (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">brownish gray</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for taupe that I've seen before include "Brownish-grey colour" , "Grey tinged with brown" , "Fifty Shades of Grey must include this" , "Greyish brown" , "Grey-brown colour" .)