Interior designer's focus (5)
I believe the answer is:
decor
'interior designer's focus' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for decor that I've seen before include "stage background" , "Colour scheme, furnishing etc. of a room" , "Interior design; stage scenery" , "Colour-scheme etc of a room" , "Credo (anag.)" .)