Artist in relation to one of his colours (6)
I believe the answer is:
renoir
'artist' is the definition.
(French artist Pierre-Auguste Renoir)
'relation to one of his colours' is the wordplay.
'relation' becomes 're' (re is a kind of relation).
'to one of his colours' becomes 'noir' (I can't justify this - if you can you should believe this answer much more).
're'+'noir'='RENOIR'
'in' acts as a link.
Can you help me to learn more?
(Other definitions for renoir that I've seen before include "Jean -, Fr. film director, son of painter" , "French artist" , "Fr. impressionist ('La Loge')" , "French Impressionist painter, 1841-1919" , "film maker" .)