Brown, say (6)
I believe the answer is:
colour
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">brown say</span>' is the definition.<br/ ><span class="explanation-format__explanation">(brown is a kind of colour)</span><br/ ><br/ >This is all the clue.<br/ ></span>
(Other definitions for colour that I've seen before include "Blue or green, say" , "Tinge - distort" , "'Tinge, hue (6)'" , "Quality that results from light reflection" , "Red or green, say" .)