def show(self, header):
        """Display content of theme."""
        names = self.options.keys()
        names.sort()
        self.prnt('')
        self.prnt(header)
        for name in names:
            self.prnt('  %s %s= %s%s' % (name, weechat.color('chat_delimiters'),
                                         weechat.color('chat_value'), self.options[name]))