Angry, left (3)

I believe the answer is:
red
I believe this clue is a double definition.
'angry' is the first definition.
(I've seen this in other clues)
'left' is the second definition.
(thesaurus)
(Other definitions for red that I've seen before include "Stop light" , "Colour of a cardinal's hat" , "socialist?" , "14 -- breed of 4" , "Inflamed" .)