def METHOD_NAME(self, plots):
    """ Decorates a plot to indicate it is selected """
    for plot in concat(_ensure_list(p) for p in plots.values()):
        if not hasattr(plot, "_orig_alpha"):
            # FIXME: These attributes should be put into the class def.
            plot._orig_alpha = plot.alpha
            plot._orig_line_width = plot.line_width
        if plot in self._selected_renderers:
            plot.line_width = plot._orig_line_width * self.line_scale
            plot.alpha = plot._orig_alpha
        else:
            plot.alpha = plot._orig_alpha / self.dim_factor
            plot.line_width = plot._orig_line_width / self.line_scale
    # Move the selected renderers to the front
    if len(self._selected_renderers) > 0:
        container = self._selected_renderers[0].container
        components = container.components[:]
        for renderer in self._selected_renderers:
            components.remove(renderer)
        components += self._selected_renderers
        container._components = components