Shade thrown: be sulky (3,4)
I believe the answer is:
sky blue
'shade' is the definition.
(I have seen 'Heavenly shade ' mean 'sky blue' so perhaps 'shade' could also mean 'sky blue')
'thrown be sulky' is the wordplay.
'thrown' indicates an anagram.
'be'+'sulky'='besulky'
'besulky' anagrammed gives 'SKY-BLUE'.
(Other definitions for sky blue that I've seen before include "Colour overhead on a fine day" , "Colour of the heavens" , "Seeing this, one may be looking up" , "Heavenly shade" , "clear as day" .)