You'll be amazed at how easy it is for any guy to throw together an off-duty look like this. Just a light blue denim shirt combined with blue ripped jeans. And if you want to effortlessly up the style ante of this look with one single piece, why not introduce a pair of burgundy leather derby shoes to this look? If you're looking for a season-appropriate look, here is a great one. This ensemble should clear any doubts you had about dressing casually in your forties.