Set Background color specific cells

       

                    $styleArray = array(
                        'font' => array(
                            'bold' => true,
                            'color' => array('rgb' => '000000'),
                            'size' => 15,
                            'name' => 'Arial'
                        ),
                        'fill' => array(
                            'type' => PHPExcel_Style_Fill::FILL_SOLID,
                            'color' => array(
                                'rgb' => '61BD09'
                            ),
                        )
                    );
                    $objPHPExcel->getActiveSheet()->getStyle('A7:Z7')->applyFromArray($styleArray);