Put in the shade, perhaps (6)

I believe the answer is:

darken

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'shade perhaps' is the definition.
'darken' can be an answer for 'shade' (I've seen this before). I'm not sure about the 'perhaps' bit.

I don't understand how the rest of the clue works.

Can you help me to learn more?

(Other definitions for darken that I've seen before include "Cloud over" , "Dim" , "shade" , "Grow less light" , "Make less light" .)

I've seen this clue in the Evening Standard.

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