Ace newspaper putting colour back into pieces (7)
I believe the answer is:
asunder
'into pieces' is the definition.
(synonyms)
'ace newspaper putting colour back' is the wordplay.
'ace' becomes 'a' (abbreviation).
'newspaper' becomes 'sun' (UK newspaper The Sun).
'putting colour back' becomes 'der' (I can't explain this - if you can you should believe this answer much more).
'a'+'sun'+'der'='ASUNDER'
Can you help me to learn more?
(Other definitions for asunder that I've seen before include "(Break) apart" , "(Split) apart" , "Let no man put -" , "going to pieces" , "(Split) into pieces" .)