For reference sake, I'm talking about something along these lines.
I suppose I could take a picture of it as well, but I haven't had waist suppression done to the jacket yet (and it needs it).
Yes. Casual linen (or cotton) navy sports coat over a white OCBD (top two buttons undone) paired with a bright pair of shorts and casual loafers. Casual belt. Everything needs to fit well and it needs to be within the right setting. Did this a few times on Nantucket this year and it worked. The examples posted are ridiculous; db's ad ties with shorts? Looks like these guys got the high low concept before it become trendy, LOL.
Switch out jacket for a navy cotton or linen SB jacket (casual), lose tie, undue top two buttons of shirt... add casual belt and loafer = this would work.... but not off the beach or a hot summer night outdoors.