Significantly colourful thing to wear (6)
I believe the answer is:
favour
This clue could be a double definition.
'significantly colourful thing' is the first definition.
The definition and answer can be both acts as well as being singular nouns.
Maybe they are linked in a way I don't understand?
'wear' is the second definition.
The answer and definition can be both acts as well as being singular nouns.
Maybe you can see an association between them that I don't see?
'to' is the link.
Can you help me to learn more?
(Other definitions for favour that I've seen before include "Give support to - kind deed" , "An act of kindness or of preferance" , "help" , "Grace and - denotes housing granted by queen" , "Prefer one over the other" .)