Fabric swatch in orange, though not entirely (5)
I believe the answer is:
chino
'fabric' is the definition.
(chino is a kind of fabric)
'swatch in orange though not entirely' is the wordplay.
'not entirely' says the answer is hidden in the clue.
'CHINO' is hidden within 'swatch in orange though'.
(Other definitions for chino that I've seen before include "Durable cotton fabric" , "Cotton twill fabric" , "Type of fabric" , "Cotton textile material" , "Coarse cotton khaki-coloured fabric" .)