Changed colour when the auditor cashed in his chips (4)

I believe the answer is:

dyed

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'changed colour' is the definition.
(I've seen this before)

I don't understand the rest of the clue.

(Other definitions for dyed that I've seen before include "(Of fabric) coloured" , "Stained - coloured" , "A shade unnatural" , "Coloured by dipping in liquid" , "Cloth is often" .)

I've seen this clue in the Sydney Morning Herald.

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