docs: def _init_style(self):
          """ Inits style options """
          self._background = QtGui.QColor('white')
          self._foreground = QtGui.QColor('black')
          self._whitespaces_foreground = QtGui.QColor('light gray')
          app = QtWidgets.QApplication.instance()
          self._sel_background = app.palette().highlight().color()
          self._sel_foreground = app.palette().highlightedText().color()
          self._font_size = 10
          self.font_name = ""