Your list of causes of discoloured urine omits the phenols, which used to be rare.
But the drug PROPOFOL given intravenously is now one of the commoner causes of discoloured urine in seriously ill patients in Intensive Care Units.
All phenols including propofol (which is a modified phenol) are metabolised in the normal liver to a number of greenish brownish and blackish substances.
(I published the first paper on green urine caused by propofol in 1987.)
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