Use crayons (5)
I believe the answer is:
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">use crayons</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 color that I've seen before include "Californian red?" , "Shade, tint (US sp.)" , "brightness in US" , "Hue (US spelling)" .)