Such painting can be green (5)
I believe the answer is:
genre
'such painting' is the definition.
'can be green' is the wordplay.
'can be' indicates an anagram.
'green' is an anagram of 'GENRE'.
Can you help me to learn more?
(Other definitions for genre that I've seen before include "Style/category of art" , "Literary or artistic type or style" , "expressive style of music" , "Category (of art)" , "Artistic or literary category" .)