Michael Douglas wears a pair of Oliver Peoples Benedict sunglasses In the movie Solitary Man. The sunglasses seen in the film have dark lenses and a silver frame, but you can get these stylish shades in gold as well. You have a choice of Photo-chromic, Polarized, or Mineral Glass lenses. Get them  at the Oliver Peoples store or at Amazon.com ($299,00).

Reference: Oliver Peoples Benedict, silver with chrome sapphire

Complete the look!
In the movie Michael Douglas wears a yellow t-shirt wth the text "Keep the Spirit Alive. High Five" (see screenshot on the left). This exact t-shrt is available at PrankPlace.com for $17.98.