Why doesn't Jimmy Leyland wear a proper uniform? And don't they sing the national anthem in Detroit?

I don't watch a lot of baseball on TV, in general (it's better on the radio) and I certainly don't waste a lot of time with the no-strategy American league, so it came as a bit of a surprise last night to see Jim Leyland wearing some kind of weird sweater- top instead of the traditional Tigers home jersey.

When did American League managers stop wearing their team colors? And why?

Also, the game, last night, began after some fat singer did a rendition of American the Beautiful, a fine song, and arguably a more appropriate anthem then the Star Spangled Banner. Still, AtB isn't the national anthem, and by tradition a baseball game begins with the SSB.

I don't much care if the tradition was changed, but I would have appreciated a note or phone call.