You can use some Javascript like this

$(document).ready(function() {
  
  altColor();

  $('.rowcolortable').on('click', '.form-del-field', function () {
    altColor();
  });
  
  $('.rowcolortable').on('click', '.cf-table-add-row', function () {
    altColor();
  });
  
  function altColor() {
    $("tr:odd").css("background-color", "#ff0000");
    $("tr:even").css("background-color", "#ffffff");
  }
});

Note that the table would be using the CSS class rowcolortable. It takes into account a table where you allow the user to add or delete rows to it so it doesn't have to be a fixed table.