HighChart different colors (histograms)

var chart = new Highcharts.Chart({
            chart: {
                plotBackgroundColor: null,
                plotBorderWidth: null,
                backgroundColor: "transparent",
                plotShadow: false,
                renderTo: 'CMForNetWidthInCmts'
            },
            colors:["#434348", "#3398db", "#90ed7d", "#f7a35c", "#61a0a8", "#61a0a8", "#91c7ae", "#2f4554"], 
title: { // text: PORTAL.Translate.cmts_table_AllNetCMTypeCount text: "" }, 
tooltip: { pointFormat: '{series.name}: <b>{point.y}</b>' }, 
plotOptions: { pie: { allowPointSelect: true, cursor: 'pointer', dataLabels: { enabled: true, color: '#000000', connectorColor: '#000000', format: '<b>{point.name}</b>: {point.y} ( {point.percentage:.1f} % )' } } }, 
series: [{ type: 'pie', name: PORTAL.Translate.Report_pon_Quantity, data: [], }] });