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 am not sure about this - if you are sure you should give a lot more credence to this answer).
'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" .)