Light in shade there alive (8)
I believe the answer is:
ethereal
'light' is the definition.
(I've seen this before)
'in shade there alive' is the wordplay.
'in' indicates the answer is hidden within the clue.
'ETHEREAL' is hidden within 'shade there alive'.
(Other definitions for ethereal that I've seen before include "'Delicate, heavenly (8)'" , "Like fairies" , "Airy; heavenly" , "Light and delicate in appearance, heavenly" , "Airy, celestial" .)