def get_rgb(self, index):
        return tuple(self.arr[index])
Updates the editor when the object trait changes external to the
dataset/ETHPy150Open ejeschke/ginga/ginga/RGBMap.py/RGBMapper.get_rgb--crossover with--dataset/ETHPy150Open enthought/traitsui/traitsui/wx/html_editor.py/SimpleEditor.update_editor