Colour scheme in section of wide corridor (5)
I believe the answer is:
decor
'colour scheme' is the definition.
(I've seen this before)
'section of wide corridor' is the wordplay.
'section of' indicates a hidden word.
'DECOR' is hidden within 'wide corridor'.
'in' acts as a link.
(Other definitions for decor that I've seen before include "stage background" , "Style of furnishing etc used in room" , "Choice of colour" , "ornament" , "Colour scheme, furnishing etc. of a room" .)