Is such a light of a silvery nature? (4)

I believe the answer is:

very

I'm a little stuck... Click here to teach me more about this clue!

'is such a light' is the definition.
I can't judge whether this definition defines the answer.

'of a silvery nature?' is the wordplay.
'of' indicates the answer is hidden within the clue.
'VERY' can be found hidden inside 'silvery nature'.

Can you help me to learn more?

(Other definitions for very that I've seen before include "Real" , "Ever so" , "type of light" , "Exceedingly" , "Extremely, in a high degree" .)

I've seen this clue in the Evening Standard.

Want a hint initially instead of a full solution? Install my app