PrinceOfCats,
I always enjoy your posts, but I have to disagree with you here also. Like it or not, it IS considered incorrect to button the bottom button. It was explained to me that most suits are cut these days so that one fastened button acts like a fulcrum for the suit. If you have all the buttons fastened, it limits movement. Aside from that, it is a bit of a convention started around the start of the 20th century when the then British King got a little portly. But, since that time, suit jackets have actually been cut with the assumption that the bottom button WON'T be used. So, to 99.9999999% of men who wear suits well, buttoning all the buttons connotes a lack of knowledge about "sartorial" dress. It also just looks a little stiff.
I would also argue that the use of brown shoes with dark suits is actually incredibly stylish and has a long history. There are entire groups of elegantly-dressed European gentlemen who actually NEVER wear black shoes, except with tuxedo or other "black-tie" attire.
John