如何格式化導出的Excel表格與列顏色在PHP中？

我已經導出一個Excel表格，它將從我的客戶表（Mysql數據庫）收集數據現在我想用列顏色對其進行格式化。如何格式化導出的Excel表格與列顏色在PHP中？

這裏是我的代碼導出Excel工作表....

<?php 

ob_start(); 
session_start(); 
include("include/session.php"); 
include("common_function.php"); 
//connect the database 

$customer_id=$_GET['pid']; 
//Enter the headings of the excel columns 
$contents="Sr.,Agent Name,Contact Person,Contact Number,Password,Deal With Customer,References,Time to reach,Package Offered,Mode of Payment,Note,NEAREST CROSS STREET,DATE OF BIRTH\n"; 

//Mysql query to get records from datanbase 
//You can customize the query to filter from particular date and month etc...Which will depends your database structure. 

$sql = "SELECT id,agent_id,fname1,mobile_no,password,fname,rentfrom,cheque_no,package_id,monthly_monitoring,final_comment,cross_street,dob1 FROM customer WHERE `id`='$customer_id'"; 

$user_query = mysql_query($sql); 

//While loop to fetch the records 
while($row = mysql_fetch_array($user_query)) 
{ 
$contents.=$row['id'].","; 
$contents.=$row['agent_id'].","; 
$contents.=$row['fname1'].","; 
$contents.=$row['mobile_no'].","; 
$contents.=$row['password'].","; 
$contents.=$row['fname'].","; 
$contents.=$row['rentfrom'].","; 
$contents.=$row['cheque_no'].","; 
$contents.=$row['package_id'].","; 
$contents.=$row['monthly_monitoring'].","; 
$contents.=$row['final_comment'].","; 
$contents.=$row['cross_street'].","; 
$contents.=$row['dob1']."\n"; 
} 

// remove html and php tags etc. 
$contents = strip_tags($contents); 

//header to make force download the file 

header("Content-Disposition: attachment; filename=Sale_report".date('d-m-Y').".csv"); 
print $contents; 

?>

現在我要的顏色我的第一排......

來源

2012-12-14 Nik' sWorld