Screen depicting colour in a variety of rose (7)
I believe the answer is:
reredos
'screen' is the definition.
(a reredos is an ornamental screen)
'colour in a variety of rose' is the wordplay.
'colour' becomes 'red' (red is a kind of colour).
'in' is an insertion indicator.
'a variety of' indicates an anagram.
'rose' with letters rearranged gives 'reos'.
'red' inserted within 'reos' is 'REREDOS'.
'depicting' is the link.
(Other definitions for reredos that I've seen before include "Wall decoration behind altar" , "Painted screen behind an altar" , "Back of fireplace" , "Hanging in church" , "Red rose could show a screen behind the altar" .)