Papers turning a pallid colour in refuse (8)
I believe the answer is:
disallow
'refuse' is the definition.
(thesaurus)
'papers turning a pallid colour' is the wordplay.
'papers' becomes 'id' (identification papers).
'turning' says the letters should be written in reverse.
'a pallid colour' becomes 'sallow'.
'id' reversed gives 'di'.
'di'+'sallow'='DISALLOW'
'in' is the link.
(Other definitions for disallow that I've seen before include "Prohibit, veto" , "Rule out" , "Reject" , "refuse permission" , "Prevent" .)