V–J day in Times Square, perhaps the most famous photograph by Alfred Eisenstadet, is of an American sailor kissing a young woman on V-J Day in Times Square on August 14, 1945, that was originally published in Life magazine. (Wikipedia)
Apparently numerous people have made claims to being the unknown subjects, and the photo wouldn't have been taken if they weren't wearing contrasting colours.
I love this vintage poster - I have a magnet version! Remember those tampon ads??