New, a shocking pink serviette (6)
I believe the answer is:
napkin
'serviette' is the definition.
(I know that serviette can be written as napkin)
'new a shocking pink' is the wordplay.
'new' becomes 'n' (common abbreviation eg NT for New Testament).
'shocking' indicates anagramming the letters (I've seen this in other clues).
'pink' anagrammed gives 'pkin'.
'n'+'a'+'pkin'='NAPKIN'
(Other definitions for napkin that I've seen before include "Protective cloth square donned during meals" , "Cloth for wiping" , "Diner's cloth" , "Protective cloth square worn at meal" , "Cloth to stop, eg, gravy" .)