def __init__(self, **kwargs):
    super(AladinLiteLayerState, self).__init__(**kwargs)
    self._sync_color = None
    self._sync_alpha = None
    self.add_callback('layer', self._layer_changed)
    self._layer_changed()
def __init__(self, **kwargs):
    super(AladinLiteLayerState, self).__init__(**kwargs)
    self._sync_color = None
    self._sync_alpha = None
    self.add_callback('layer', self._layer_changed)
    self._layer_changed()