Colorised every third day in Superjob.ru calendar in 2015

gistfile1.js

var data = [
  {month: 1, reminder: 0},
  {month: 2, reminder: 2},
  {month: 3, reminder: 1},
  {month: 4, reminder: 2},
  {month: 5, reminder: 1},
  {month: 6, reminder: 2},
  {month: 7, reminder: 1},
  {month: 8, reminder: 0},
  {month: 9, reminder: 1},
  {month: 10, reminder: 0},
  {month: 11, reminder: 2},
  {month: 12, reminder: 0}
];

function colorrizeMonth(data) {
  for (var j = 0; j < data.length; j++) {
    var cells = $('.ProductionCalendar_grid:nth-child('+data[j].month+') .ProductionCalendar_cells > div');
    cells.removeClass('ProductionCalendar_holiday');
    for (var i = 0; i < cells.length; i++) {
      if ((i % 3) === data[j].reminder) {
        $(cells[i]).css({background:'blue'});
      }
    }
  }
}

colorrizeMonth(data);