The colour of various clarets (7)
I believe the answer is:
scarlet
'the colour' is the definition.
(scarlet is a kind of colour)
'various clarets' is the wordplay.
'various' indicates anagramming the letters.
'clarets' is an anagram of 'SCARLET'.
'of' acts as a link.
(Other definitions for scarlet that I've seen before include "Red colour of clarets" , "Crimson" , "Bright red of clarets" , "Vivid red" , "Cartels (anag.)" .)