Shade naive (5)
I believe the answer is:
green
This clue is a double definition.
'shade' is the first definition.
(I know that Green is a type of shade)
'naive' is the second definition.
(I know that naive can be written as green)
(Other definitions for green that I've seen before include "Environmentally concerned" , "Flourishing" , "one may be putting on" , "Village space" , "Caring for environment" .)