BuddyPress.org

I think the less HTML in the core, the better. You can already select submit buttons using CSS. Like this:

input[type="submit"] { blah blah blah }

Probably doesn’t work in any version of Explorer. LOL. But who cares. Let the IE people see an ugly (but still functional) button.

http://www.w3schools.com/css/css_attribute_selectors.asp