Best practice for now would be to combine the theme with your chart options :
chart1 = new Highcharts.Chart(Highcharts.merge(options1, theme1));
var options1 = { // options goes here chart: { renderTo: 'chart1', type: 'bar', }, title: { text: 'Conversions' }, }; var theme1 = { // themes goes here }; var chart1 = new Highcharts.Chart(Highcharts.merge(options1, theme1));
this way you can set separate themes for each chart, if you also need
Moes
source share