New versions of those coloured moored platforms? (8)

I believe the answer is:

redrafts

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'new versions of those' is the definition.
I can't judge whether this definition defines the answer.

'coloured moored platforms?' is the wordplay.
'coloured' becomes 'red' (similar in meaning).
'moored platforms?' becomes 'rafts' (I can't justify this - if you can you should give a lot more credence to this answer).
'red'+'rafts'='REDRAFTS'

Can you help me to learn more?

(Another definition for redrafts that I've seen is " Modifies".)

I've seen this clue in the Evening Standard.

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