Cooked bream's colour (5)
I believe the answer is:
amber
'colour' is the definition.
(amber is a kind of colour)
'cooked bream's' is the wordplay.
'cooked' indicates anagramming the letters.
'bream' anagrammed gives 'AMBER'.
(Other definitions for amber that I've seen before include "Fossil resin - bream (anag)" , "first light" , "Yellow-orange" , "Ornamental fossil resin" , "Brownish yellow" .)