Uneducated type in drably coloured church … (5)
I believe the answer is:
dunce
'uneducated type' is the definition.
'drably coloured church' is the wordplay.
'drably coloured' becomes 'dun' (dun means of a grey-brown colour).
'church' becomes 'ce' (abbreviation for Church of England).
'dun'+'ce'='DUNCE'
'in' acts as a link.
(Other definitions for dunce that I've seen before include "Poor student" , "Old word for person slow at learning" , "Idiot" , "Poor learner" , "Dolt" .)