parameters: (self, event)
docstring: Handles the Add Custom ``wx.EVT_BUTTON`` event for :class:`CubeColourDialog`.
  
          :param `event`: a :class:`CommandEvent` event to be processed.
docstring_summary: Handles the Add Custom ``wx.EVT_BUTTON`` event for :class:`CubeColourDialog`.
docstring_tokens: Handles the Add Custom wx . EVT_BUTTON event for : class : CubeColourDialog .
function: def OnAddCustom(self, event):
          """
          Handles the Add Custom ``wx.EVT_BUTTON`` event for :class:`CubeColourDialog`.
  
          :param `event`: a :class:`CommandEvent` event to be processed.
          """
  
  
          self.customColours.AddCustom(self._colour)
function_tokens: def OnAddCustom ( self , event ) : self . customColours . AddCustom ( self . _colour )