<SYSTEM_TASK:>
Solve the following problem using Python, implementing the functions described below, one line at a time
<END_TASK>
<USER_TASK:>
Description:
 def style_factory(self, style_name):
 """Retrieve the specified pygments style. If the specified style is not found, the vim style is returned. :type style_name: str :param style_name: The pygments style name. :rtype: :class:`pygments.style.StyleMeta` :return: Pygments style info. """

        try:
            style = get_style_by_name(style_name)
        except ClassNotFound:
            style = get_style_by_name('vim')

        # Create a style dictionary.
        styles = {}
        styles.update(style.styles)
        styles.update(default_style_extensions)
        t = Token
        styles.update({
            t.Menu.Completions.Completion.Current: 'bg:#00aaaa #000000',
            t.Menu.Completions.Completion: 'bg:#008888 #ffffff',
            t.Menu.Completions.Meta.Current: 'bg:#00aaaa #000000',
            t.Menu.Completions.Meta: 'bg:#00aaaa #ffffff',
            t.Scrollbar.Button: 'bg:#003333',
            t.Scrollbar: 'bg:#00aaaa',
            t.Toolbar: 'bg:#222222 #cccccc',
            t.Toolbar.Off: 'bg:#222222 #696969',
            t.Toolbar.On: 'bg:#222222 #ffffff',
            t.Toolbar.Search: 'noinherit bold',
            t.Toolbar.Search.Text: 'nobold',
            t.Toolbar.System: 'noinherit bold',
            t.Toolbar.Arg: 'noinherit bold',
            t.Toolbar.Arg.Text: 'nobold'
        })

        return style_from_dict(styles)