Notice drunk brightened up specially (7)
I believe the answer is:
spotlit
'brightened up specially' is the definition.
I can't tell whether this definition defines the answer.
'notice drunk' is the wordplay.
'notice' becomes 'spot' (spot can mean to notice or observe).
'drunk' becomes 'lit' (slang term).
'spot'+'lit'='SPOTLIT'
Can you help me to learn more?
(Other definitions for spotlit that I've seen before include "that's clearly visible on stage" , "centre of attention" , "highly illuminated" , "Drew attention to" , "Brightly illuminated" .)