If you look at pages today and compare them to pages some years ago, it seems to me that because of usability best practices, they have become a lot more alike.

If you look at pages today and compare them to pages some years ago, it seems to me that because of usability best practices, they have become a lot more alike. The step to a default style doesn't seem such a large one. When enough people use Twitter Bootstrap, we could just support that natively in the browser.