code: public static String getStatusStyleForItem(Long lastActivity) {
  
          if (lastActivity.longValue() < CmsSessionsTable.INACTIVE_LIMIT) {
              return OpenCmsTheme.TABLE_COLUMN_BOX_CYAN;
          }
          return OpenCmsTheme.TABLE_COLUMN_BOX_GRAY;
      }
docs: Gets the status style for given session.<p>
  
  @param lastActivity miliseconds since last activity
  @return style