I didn't mean to imply that the standard isn't white- only that a 'completely white manner' can still get you labeled as ignorant, arrogant, vapid, or otherwise less than equal. Same with names- it's a phenomenon that extends past race. The only time that it all works out is if you're perfectly mundane.

And I honestly even wonder if normal or mainstream works. I remember something about 70% of the audience for rap and 'gangsta' music is young white males. Similarly, I'd guess the population of the US that has a noticeable accent is much larger than the portion that doesn't. And so on. It's not so much normal or average or typical, as it is bland, mundane, or utterly inoffensive. Idealization of the greatest common denominator, as it were.