Colour scheme (5)
I believe the answer is:
decor
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">colour scheme</span>' is the definition.<br/ ><span class="explanation-format__explanation">(I've seen this before)</span><br/ ><br/ >This is the entire clue.<br/ ></span>
(Other definitions for decor that I've seen before include "stage background" , "Interior design; stage scenery" , "Furnishings and colours of a room" , "Choice of colour" , "furnishings required" .)