I’m wearing green, following party instructions (2-7)

'following party instructions' is the definition.
(sticking to a political party's agreed policy)

'i'm wearing green' is the wordplay.
I cannot quite see how this works, but
'i'm' could be 'me' (both refer to the person speaking or writing) and 'me' is located in the answer.
'green' could be 'sage' (sage green is a kind of green) and 'sage' is present in the answer.
The remaining letters 'ons' is a valid word which might be clued in a way I don't understand.
This may be the basis of clue (or it may be nonsense).