Artificially coloured in a shoddy edition (4)
I believe the answer is:
dyed
'artificially coloured' is the definition.
(I've seen this before)
'in a shoddy edition' is the wordplay.
'in' says the answer is hidden in the clue.
'DYED' is hidden within 'shoddy edition'.
(Other definitions for dyed that I've seen before include "Given a new colour" , "Cloth is often" , "Changed the colour of fabric" , "Stained with a new colour" , "Changed to a new colour" .)