Bright colour makes church ascend (6)
I believe the answer is:
cerise
'bright colour' is the definition.
'cerise' can be an answer for 'colour' (cerise is a kind of colour). I am not sure about the 'bright' bit.
'church ascend' is the wordplay.
'church' becomes 'CE' (abbreviation for Church of England).
'ascend' becomes 'rise' (rising is a kind of ascending).
'ce'+'rise'='CERISE'
'makes' is the link.
Can you help me to learn more?
(Other definitions for cerise that I've seen before include "Pinkish red" , "'E cries at the colour red" , "Pinkish-red" , "Cherry red colour" , "Color of ripe cherries" .)