Colouring agent in jelly that's provocative (5)
I believe the answer is:
kinky
'provocative' is the definition.
Both the definition and answer are adjectives. Maybe there's an association between them I don't understand?
'colouring agent in jelly' is the wordplay.
I cannot really see how this works, but
'in' is found in the answer.
This explanation may well be incorrect...
'that's' acts as a link.
Can you help me to learn more?
(Other definitions for kinky that I've seen before include "Strange, eccentric" , "Irritatingly self-satisfied" , "depraved" , "Sexually unusual" , "Twisted" .)