$objPHPExcel->getActiveSheet()->setCellValueByColumnAndRow($col,$xlsRow,$plan);

$objPHPExcel->getActiveSheet()->getStyle("A1")->getFill()
    ->setFillType(PHPExcel_Style_Fill::FILL_SOLID)
    ->getStartColor()->setRGB($color);

$objPHPExcel->getActiveSheet()
    ->getStyle('A1:E1')
    ->getFill()
    ->setFillType(PHPExcel_Style_Fill::FILL_SOLID)
    ->getStartColor()
    ->setARGB('FF808080');

$objPHPExcel->getActiveSheet()
    ->getStyle('A1:E1')
    ->applyFromArray(
        array(
            'fill' => array(
                'type' => PHPExcel_Style_Fill::FILL_SOLID,
                'color' => array('rgb' => 'E05CC2')
            )
        )
    );

$column = PHPExcel_Cell::stringFromColumnIndex(45);
$row = 1;
$cell = $column.$row;

$objPHPExcel->getActiveSheet()->getStyle($range)->getFill()->applyFromArray(array(
        'type' => PHPExcel_Style_Fill::FILL_SOLID,
        'startcolor' => array(
             'rgb' => 'FFFF00' //Yellow
        )
    ));