protected function renderBackground(
        \Jdenticon\Rendering\RendererInterface $renderer, 
        \Jdenticon\Rendering\Rectangle $rect,
        \Jdenticon\IdenticonStyle $style, 
        \Jdenticon\Rendering\ColorTheme $colorTheme, 
        $hash)
    {
        $renderer->setBackgroundColor($style->getBackgroundColor());
    }