Conservative affected by wind when speaking (4)
I believe the answer is:
blue
'conservative' is the definition.
(I've seen this before)
I don't understand how the rest of the clue works.
Can you help me to learn more?
(Other definitions for blue that I've seen before include "Azure" , "Oxbridge sports award" , "Sky-coloured" , "e.g. Indigo" , "Sad - colour" .)