Of a matching, flattering colour? (7)
I believe the answer is:
kindred
'of a matching flattering colour?' is the definition.
The definition suggests a singular noun which matches the answer.
'flattering colour?' is the wordplay.
'flattering' becomes 'kind' (I can't explain this - if you can you should believe this answer much more).
'colour?' becomes 'red' (red is a kind of colour).
'kind'+'red'='KINDRED'
Can you help me to learn more?
(Other definitions for kindred that I've seen before include "Relatively" , "Family and relations" , "Family - similar" , "Related by blood or marriage" , "[TRIBAL]" .)