How to fill in different color headers and rows

Hello guys, I was very interested in this library and did a lot of work with it, at the moment I’m stuck with how to fill out the headings and rows with different colors with a loop. This is my code, where I find all cells in my table by tag “tbody” and my table have class “table_for_export_excel”

$('.table_for_export_excel').each(function(index, element){
		var body = [];
			$(element).each(function (index_body, element_body){
				$($(element_body).find("#tbody tr")).each(function(index_tr, element_tr){
					$(this.cells).each(function(index_td, element_td){

				  	body.push($(element_td).text());
					});
						worksheet.addRow(body);
						body = [];	
				});	
			});
			});

I have tried usage worksheet.eachRow but this did not help me((

[azhar22k]

@PashaFrontEnd Instead of setting the property of each cell, you can set it for a row directly Following example changes the style of header row(row 1)

const workbook = new ExcelJS.Workbook();
const worksheet = workbook.addWorksheet();
worksheet.columns = [
			{ key: 'pp', width: 15},
			{ key: 'part', width: 25},
			{ key: 'plav', width: 25 },
			{ key: 'rul', width: 25 },
			{ key: 'date', width: 25 },
			{ key: 'nd', width: 25 },
			{ key: 'mark', width: 25 },
			{ key: 'znach', width: 25 },
			{ key: 'tol', width: 25 },
			{ key: 'width', width: 25 },
			{ key: 'length', width: 25 }
];

worksheet.getRow(1).fill = {
type: 'pattern',
pattern:'solid',
fgColor:{ argb:'cccccc' }
}

[PashaFrontEnd]

@itz-azhar thanks for help, but each column have has different sizes )