sorry not too much time this week. Indeed, there were winter and summer uniform for the sailors, blue and white. Dress uniform was blue too, thus the pic above could fit for the winter and the dress version. Though the dress uniform had some additional golden coloured elements, see the pic in the attachment.
there werent not too many insignias for the sailors, sometimes an anchor, sometimes nothing, that red star on the pic below isn't an usual one, actually the guy is a "Old Sailor", the red fleet had that sort of title for the veterans of the fleet, only they had these stars.
Osprey guy is just a mix. The second pic in my attachment is a good example for the differences. The marines on the pics wear lots of different uniform pieces, also some infantry ones.