code: public void setBackground(Background background) {
  
          switch (background) {
              case BLUE:
                  m_backgroundStyle.setValue(I_CmsLayoutBundle.INSTANCE.listItemWidgetCss().itemBlue());
                  break;
              case RED:
                  m_backgroundStyle.setValue(I_CmsLayoutBundle.INSTANCE.listItemWidgetCss().itemRed());
                  break;
              case YELLOW:
                  m_backgroundStyle.setValue(I_CmsLayoutBundle.INSTANCE.listItemWidgetCss().itemYellow());
                  break;
              case DEFAULT:
              default:
                  m_backgroundStyle.setValue(null);
          }
      }
docs: Sets the background color.<p>
  
  @param background the color