Hue changer (4)
I believe the answer is:
dyer
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">hue changer</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this in another clue)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for dyer that I've seen before include "Also a cleaner, probably" , "Colourer (of clothes, perhaps)" , "One colouring e.g. fabric" , "Fabric colourer" , "Increase (in output)" .)