Greenish illumination could be dramatic! (9)

I believe the answer is:

limelight

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'be dramatic' is the definition.
I can't tell whether this defines the answer.

'greenish illumination' is the wordplay.
'greenish' becomes 'lime' (I've seen this in another clue).
'illumination' becomes 'light' (synonyms).
'lime'+'light'='LIMELIGHT'

'could' acts as a link.

Can you help me to learn more?

(Other definitions for limelight that I've seen before include "Intense publicity like stage illumination" , "having prominence on stage" , "centre of public attention" , "Focus of attention" , "Public notice" .)

I've seen this clue in the Evening Standard.

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