Horse hue (4)
I believe the answer is:
roan
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">horse hue</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 roan that I've seen before include "Reddish-coloured horse" , "Horse with a coat of mixed colour" , "(Horse) white-sprinkled coat" , "Type of 17's coat colouring" , "Horse with brownish coat speckled with white" .)