Problem to get bg color using PHPExcle

[maxfx]

hey guys i'm new here and i cannt figure out how to get the bg color of my A5 cell in my excle file it's blue and my code always output me FFFFFF (LINE 14 in the code i paste below)

 

ini_set('include_path', ini_get('include_path').';../Classes/');
require "PHPExcel.php";
require "PHPExcel/Writer/Excel2007.php";

$col_array = array("A","B","C","D","E","F","G","H","I","J","K","L","M","N","O","P","Q","R","S","T","U","V","W","X","Y","Z");

$objPHPExcel = new PHPExcel();
$file = "05-2.xls";
//echo $file;
$objReader = PHPExcel_IOFactory::createReaderForFile($file);
$objReader->setReadDataOnly(true);
$objPHPExcel  = $objReader->load($file);
$objWorksheet = $objPHPExcel->setActiveSheetIndex(2);
$objWorksheet = $objPHPExcel->getActiveSheet();

echo $objPHPExcel->getActiveSheet()->getStyle('A5')->getFill()->getStartColor()->getRGB();
var_dump($objWorksheet->getCellByColumnAndRow('0', '5')->getValue());
die;

$highestRow    = $objWorksheet->getHighestRow(); // e.g. 10
$highestColumn = $objWorksheet->getHighestColumn(); // e.g 'F'

$highestColumnIndex = PHPExcel_Cell::columnIndexFromString($highestColumn); // e.g. 5

for ($row = 1; $row <= $highestRow; ++$row) {	
if ($row > 3) {		
	  for ($col = 0; $col <= $highestColumnIndex; ++$col) {

		$col_num = $col_array[$col];
		echo $objWorksheet->getCellByColumnAndRow($col, $row)->getValue()."$col_num$row";

		var_dump($objPHPExcel->getActiveSheet()->getStyle($col_num.$row)->getFill()->getStartColor()->getRGB());
	  	
		$row_array[$row][] = $objWorksheet->getCellByColumnAndRow($col, $row)->getValue(); 
	  }
}
}