Courier sees confusion and turns green (9)
I believe the answer is:
messenger
'courier' is the definition.
(I know that courier can be written as messenger)
'confusion and turns green' is the wordplay.
'confusion' becomes 'mess' (mess can mean confusion or chaos).
'and' is a charade indicator (letters next to each other).
'turns' indicates anagramming the letters.
'green' is an anagram of 'enger'.
'mess'+'enger'='MESSENGER'
'sees' acts as a link.
(Other definitions for messenger that I've seen before include "Person carrying information to another" , "Kind of bearer - don't shoot him" , "One doing errands" , "The role of Hermes or Mercury?" , "Courier - don't shoot him" .)