Needed some paper in colour (8)
I believe the answer is:
required
'needed' is the definition.
(I know that needed can be written as required)
'some paper in colour' is the wordplay.
'some paper' becomes 'quire' (paper measurement).
'in' indicates putting letters inside.
'colour' becomes 'red' (red is a kind of colour).
'quire' placed within 'red' is 'REQUIRED'.
(Other definitions for required that I've seen before include "Essential, compulsory" , "Needed" , "Not optional" .)