Shade turns up next to church (4)
I believe the answer is:
puce
'shade' is the definition.
(I've seen this before)
'turns up next to church' is the wordplay.
'turns' says the letters should be written in reverse.
'next to' says to put letters next to each other.
'church' becomes 'ce' (abbreviation for Church of England).
'up' backwards is 'pu'.
'pu'+'ce'='PUCE'
(Other definitions for puce that I've seen before include "Dark red or purple-brown colour" , "Brownish-purple colour" , "Shade" , "Deep red to brownish purple" , "Purplish colour" .)