Maybe it’s over coloured and hackneyed (5)
I believe the answer is:
tired
'hackneyed' is the definition.
('tired' can be a synonym of 'hackneyed')
'maybe it's over coloured' is the wordplay.
'maybe' indicates anagramming the letters.
'over' is a charade indicator (letters next to each other).
'coloured' becomes 'red' ('red' can be similar in meaning to 'coloured'**).
'it' with letters rearranged gives 'ti'.
'ti'+'red'='TIRED'
'and' is the link.
(Other definitions for tired that I've seen before include "Worn out" , "Dressed once" , "Physically or mental weary" , "getting bored" , "Zonked" .)