Pale brownish-yellow colour (5)
I believe the answer is:
ochre
'pale brownish-yellow colour' is the definition.
(I've seen this before)
This is the entire clue.
(Other definitions for ochre that I've seen before include "Yellow-orange colour" , "Light yellow-brown colour" , "Yellowish-brown or red pigment" , "Orangey colour" , "Yellow/brown/red pigment" .)