If you would like take your off-duty game up a notch, consider pairing a blue print short sleeve shirt with white shorts. A pair of beige leather low top sneakers integrates smoothly within a variety of looks.
White Shorts with Beige Leather Low Top Sneakers Outfits For Men
Why not wear an olive horizontal striped polo with white shorts? Both of these pieces are very functional and will look good when married together. If in doubt as to the footwear, go with a pair of beige leather low top sneakers.