Like a Van Gogh painting (6)
I believe the answer is:
starry
'like a van gogh painting' is the definition.
(I've seen this in another clue)
This is all the clue.
(Other definitions for starry that I've seen before include "Stellar" , "''..., ... Night'' (Don McLean's Vincent)" , "Stellate" , "Heavenly" , "Like the optimist's eyes or the sky at night" .)