As you can see here, looking dapper doesn't take that much work. Just make a mint shirt jacket and navy chinos your outfit choice and you'll look amazing. Finishing with high top sneakers is a surefire way to add an element of stylish nonchalance to this getup.
Mint Shirt Jacket with High Top Sneakers Casual Warm Weather Outfits For Men
Put the dandy mode on in a mint shirt jacket and navy chinos. And if you wish to easily play down your look with one single item, introduce a pair of high top sneakers to the mix.