I was sorry to read that. In the late 1960's, I saw him with Judi Dench in "Cabaret" in London. As a matter of coincidence, recently I bought the cast album from that production and listened to it a couple of days ago on my daily run. A very good actor.
ASPECTS OF LOVE was freaking terrible, but Colson was much more charming and skillful than the role deserved. He did the part well enough, in fact, that I immediately felt sad when I heard the news.
Mr Colson was a lovely man and a very talented performer. I have seen whole audiences relax thanks to his presence, and surrender to him, even in troubled shows.