Natural pigment (5)
(Other definitions for ochre that I've seen before include "Yellowish-orange colour" , "Earthy colour" , "Pale brownish-yellow colour or pigment" , "Red or yellow pigment" , "Light yellow-brown colour" .)
<span class="explanation-format__ClueExplanation">'<span class="explanation-format__original">natural pigment</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 umber that I've seen before include "Dark brown (pigment)" , "Yellowish-brown pigment" , "Dark brown coloring matter" , "Natural colouring matter, dark brown" , "Usually dark brown mineral" .)