Throw scorn and I'm a deep red (7)
I believe the answer is:
crimson
'a deep red' is the definition.
(synonyms)
'throw scorn and i'm' is the wordplay.
'throw' indicates an anagram.
'and' says to put letters next to each other.
'scorn' after 'im' is 'imscorn'.
'imscorn' is an anagram of 'CRIMSON'.
(Other definitions for crimson that I've seen before include "Flush" , "Become red-faced" , "Shade of red" , "Bright red" , "Microns of colour" .)