Pale yellow (5)
I believe the answer is:
straw
'pale yellow' is the definition.
(I know that pale yellow can be written as straw)
This is all the clue.
(Other definitions for straw that I've seen before include "Thin tube; yellow" , "Dried stalks; yellow" , "remnant of harvest" , "The last one broke the camel's back" , "Thatching material" .)