Help to make specific rows in other color in export to excel

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Hi!
Hope someone can help me how to make specific rows other color the “new posts” ( 30 days back to present day in othercolor then the rest in file )

here is my script:
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<?php include('config.php'); include('opendb.php'); $selected_radio = @$_POST['formradio1'] ; switch ($selected_radio) { case 1: //$sql="SELECT * FROM foretag"; $sql="SELECT CONCAT(foretagsnamn) Företagsnamn, CONCAT(adress) Adress, CONCAT(postnr) Postnr, CONCAT(ort) Ort, CONCAT(telefon) Telefon, CONCAT(fornamn,' ',efternamn) Namn, CONCAT(email) Email, CONCAT(befattning) Befattning, CONCAT(orgnr) OrgNr, CONCAT(huvudinriktning)Huvudinriktning, CONCAT(huvudbransch) Huvudbransch, CONCAT(esn) ESN, CONCAT(branschkod) Branschkod, CONCAT(anstallda) Anställda, CONCAT(anstallda_text) AnställdaIntervall, CONCAT(omsattning_text) OmsättningIntervall, CONCAT(omsattning) Omsättning, CONCAT(kommun) Kommun, CONCAT(lan) Län, CONCAT(adressid) AdressID, CONCAT(land) Land, CONCAT(datum) Datum FROM foretag ORDER BY datum DESC"; //execute query $result = @mysql_query($sql) or die("Couldn't execute query:
" . mysql_error(). "
" . mysql_errno()); //if this parameter is included ($w=1), file returned will be in word format ('.doc') //if parameter is not included, file returned will be in excel format ('.xls') if (isset($w) && ($w==1)) { $file_type = "msword"; $file_ending = "doc"; }else { $file_type = "vnd.ms-excel"; $file_ending = "xls"; } //header info for browser: determines file type ('.doc' or '.xls') header("Content-Type: application/$file_type"); header("Content-Disposition: attachment; filename=test.$file_ending"); header("Pragma: no-cache"); header("Expires: 0"); /* Start of Formatting for Word or Excel */ if (isset($w) && ($w==1)) //check for $w again { //define separator (defines columns in excel & tabs in word) $sep = "\n"; //new line character while($row = mysql_fetch_row($result)) { //set_time_limit(60); // HaRa $schema_insert = ""; for($j=0; $j<mysql_num_fields($result);$j++) { //define field names $field_name = mysql_field_name($result,$j); //will show name of fields $schema_insert .= "$field_name:\t"; if(!isset($row[$j])) { $schema_insert .= "NULL".$sep; } elseif ($row[$j] != "") { $schema_insert .= "$row[$j]".$sep; } else { $schema_insert .= "".$sep; } } $schema_insert = str_replace($sep."$", "", $schema_insert); $schema_insert .= "\t"; print(trim($schema_insert)); //end of each mysql row //creates line to separate data from each MySQL table row print "\n----------------------------------------------------\n"; } }else{ //define separator (defines columns in excel & tabs in word) $sep = "\t"; //tabbed character //start of printing column names as names of MySQL fields for ($i = 0; $i < mysql_num_fields($result); $i++) { echo mysql_field_name($result,$i) . "\t"; } print("\n"); //end of printing column names //start while loop to get data while($row = mysql_fetch_row($result)) { //set_time_limit(60); $schema_insert = ""; for($j=0; $j

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