Take a shine to one of the buffs (6)
I believe the answer is:
polish
'take' is the definition.
The answer and definition can be both related to change as well as being verbs in their base form.
Maybe you can see a link between them that I can't see?
'a shine to one of the buffs' is the wordplay.
I cannot quite understand how this works, but
'one' could be 'li' (I've seen this in other clues) and 'li' is present in the answer.
'of' could be 'o' and 'o' is found within the answer.
This may be the basis of clue (or it may be nonsense).
Can you help me to learn more?
(Other definitions for polish that I've seen before include "Europeans" , "Shine with soft cloth, say silverware" , "A West Slavic language" , "Buff - from Poland" , "Refinement of manners" .)