//BELOW CODE SETS ROW COLOR IF USER IS SELECTED IN A "SPmembers" FIELD DIRECTLY OR THROUGH SPGROUP AND COLORS ROWS IF DATE IS LESSER THEN TODAY//
SPClientTemplates.TemplateManager.RegisterTemplateOverrides({
  OnPostRender: function(ctx) {
    var SPmembers = "int_x002e_lrn_x002e_members" //YOU CAN SET PEOPLE AND GROUPS FIELD HERE
    var SPDate = "int_x002e_lrn_x002e_date" //YOU CAN SET DATE FIELD HERE
    var RowColorUser = "#aaddaa" //YOU CAN SET ROW COLOR FOR USER CRITERIA HERE
    var RowColorDate = "#f2f2f2" //YOU CAN SET ROW COLOR FOR PAST EVENTS HERE
    var today = new Date(); // get today's date
    today.setHours(0,0,0,0); // zero out the time portion so we will only compare days
    var requestUri = _spPageContextInfo.webAbsoluteUrl + '/_api/web/CurrentUser/Groups?$select=Id,Title';
    var requestHeaders = { "accept" : "application/json;odata=verbose" };
    var rows = ctx.ListData.Row;
    var usergroupsids=[];
    var result=null;
    result = $.ajax({url : requestUri,contentType : "application/json;odata=verbose",headers : requestHeaders,global: false,async:false,success : function(data) {return data;}}) //REQUESTS ALL USER GROUPS USING REST API AND STORES ANSWER IN AN OBJECT
    for (var i = 0; i < result.responseJSON.d.results.length; i++){usergroupsids.push(result.responseJSON.d.results[i].Id);} //FORMS AN ARRAY OF GROUP ID'S FROM RESULT OBJECT
    //alert(usergroupsids); //FOR TESTING
    for (var i=0;i<rows.length;i++) //CYCLE TROUGH ALL THE ROWS DISPLAYED
    {
        var itemDate = new Date(ParseDate(rows[i][SPDate])); //GETS DATE FROM A DATE FIELD, AND CONVERT IT TO VARIABLE
        var rowElementId = GenerateIIDForListItem(ctx, rows[i]); //PREPARES ELEMENTS FOR FORMATTING
        var tr = document.getElementById(rowElementId); //PREPARES ELEMENTS FOR FORMATTING
        if (itemDate <= today)
        {
            tr.style.backgroundColor = RowColorDate;
        }
        if (rows[i][SPmembers] != "")
        {
            for (var e=0;e<rows[i][SPmembers].length;e++)
            {
                var isGroup = rows[i][SPmembers][e].jobTitle == null;
                if (isGroup) //IF jobTitle IS NULL, THEN IT'S A GROUP OBJECT, ELSE IT'S A USER OBJECT
                {
                    if ((($.inArray(parseFloat(rows[i][SPmembers][e].id), usergroupsids)) != -1) || (rows[i][SPmembers][e].title == "Everyone"))
                    {
                        tr.style.backgroundColor = RowColorUser;
                    }
                    //alert('Current User is in a group' + rows[i][SPmembers][e].title) //FOR TESTING
                    //alert('Element ' + e + ' ' + rows[i][SPmembers][e].title + ' is a Group') //FOR TESTING
                }
                else
                {
                    if ((_spPageContextInfo.userId == rows[i][SPmembers][e].id) || (rows[i][SPmembers][e].title == "Everyone"))
                    {
                        tr.style.backgroundColor = RowColorUser;
                    }
                    //alert('Element ' + e + ' ' + rows[i][SPmembers][e].title + ' is a User') //FOR TESTING
                }
            }
        }
    }
  }
});
function ParseDate(dateString) {
    //dd.mm.yyyy, or dd.mm.yy
    var dateArr = dateString.split(".");
    if (dateArr.length == 1) {
        return null;    //wrong format
    }
    //parse time after the year - separated by space
    var spacePos = dateArr[2].indexOf(" ");
    if(spacePos > 1) {
        var timeString = dateArr[2].substr(spacePos + 1);
        var timeArr = timeString.split(":");
        dateArr[2] = dateArr[2].substr(0, spacePos);
        if (timeArr.length == 2) {
            //minutes only
            return new Date(parseInt(dateArr[2]), parseInt(dateArr[1]-1), parseInt(dateArr[0]), parseInt(timeArr[0]), parseInt(timeArr[1]));
        } else {
            //including seconds
            return new Date(parseInt(dateArr[2]), parseInt(dateArr[1]-1), parseInt(dateArr[0]), parseInt(timeArr[0]), parseInt(timeArr[1]), parseInt(timeArr[2]))
        }
    } else {
        //gotcha at months - January is at 0, not 1 as one would expect
        return new Date(parseInt(dateArr[2]), parseInt(dateArr[1] - 1), parseInt(dateArr[0]));
    }
}