Romping in the dew made to look innocent (8)

I believe the answer is:

whitened

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'look innocent' is the definition.
Both the answer and definition are adjectives. Perhaps they are linked in a way I don't understand?

'romping in the dew made' is the wordplay.
'in the dew' can be anagrammed to 'WHITENED'.
However, I am not sure how this is indicated.

'to' is the link.

Can you help me to learn more?

I've seen this clue in The Independent.

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