Hate leaving each other in the autumnal shade (5)
I believe the answer is:
ochre
'shade' is the definition.
(I've seen this before)
I can't explain the rest of the clue.
Can you help me to learn more?
(Other definitions for ochre that I've seen before include "paint type" , "Orange" , "Pigment made from clay and iron oxide" , "Pale brownish-yellow colour or pigment" , "Buff" .)