Reset default values

I'm wondering whether is possible to reset any field that has been changed to its default value.

So what I'm looking for is a way to reset the field "text-with-default" to it's default value: The default text.

$meta_boxes[] = array(

    'id' => 'some_meta',
    'title' => 'Some meta',
    'settings_pages' => 'the-page',
        'fields' => array(
        array(
            'name'    => 'Something',
            'id'    => "something",
            'type'  => 'text',
            'std' => 'The default text.'
        )
    )
)

Thanks!