Artist back in stock, in refined Colorado town (3,6)
I believe the answer is:
kit carson
'colorado town' is the definition.
(historical town in Colorado)
'artist back in stock in refined' is the wordplay.
'artist' becomes 'ra' (Royal Academician, member of Royal Academy of Arts).
'back' shows that the letters should be reversed in order.
'in' means one lot of letters goes inside another.
'refined' indicates an anagram.
'ra' back-to-front is 'ar'.
'stock'+'in'='stockin'
'stockin' anagrammed gives 'kitcson'.
'ar' put within 'kitcson' is 'KIT CARSON'.
(Other definitions for kit carson that I've seen before include "one 15 [PLAYING] 24 33 [AT SIXES AND SEVENS]" , "American frontiersman - is on track (anag)" .)