[Ken Case]

You had to ask about notes... :)

For everything but notes, you can change the style using the standard formatting controls and it will apply to all items that share that style.

But since notes are rich text and support multiple styles, changing the style there currently just affects the note you're editing and not the default style for all notes. We intend to fix this, we just haven't decided how best to do that yet. Any suggestions? (A menu item that saves the current style as the default? Some preferences somewhere?)