Hamlet's hue troubled the old man (10)
I believe the answer is:
methuselah
'the old man' is the definition.
(thesaurus)
'hamlet's hue troubled' is the wordplay.
'troubled' is an anagram indicator.
'hamlets'+'hue'='hamletshue'
'hamletshue' is an anagram of 'METHUSELAH'.
(Other definitions for methuselah that I've seen before include "One very old" , "He lived 969 years (Gen.)" , "a lot of bottle" , "Large wine bottle -- biblical patriarch" , "Large wine bottle - very long-lived man" .)