I call out for shade (5)
I believe the answer is:
lilac
'for shade' is the definition.
(lilac is a shade of purple)
'i call out' is the wordplay.
'out' indicates anagramming the letters (out can mean wrong or inaccurate).
'i'+'call'='icall'
'icall' anagrammed gives 'LILAC'.
(Other definitions for lilac that I've seen before include "garden ornamental" , "Pale mauve colour for a flower" , "Drop by about one, turning" , "Shrub with fragrant purplish or white flowers" , "Mauve-like colour" .)