diff --git a/testbench/test.php b/testbench/test.php
index ba7ca4c4d..bc2519ded 100644
--- a/testbench/test.php
+++ b/testbench/test.php
@@ -15,9 +15,12 @@
 $data2 = array(
     array('2003','01','343.12'),
     array('2003','02','345.12'),
+    array('2003','02', ['Vencedor', 'SaoPaulo'], ['Perdedor', 'Flamengo']),
 );
 $writer = new XLSXWriter();
 $writer->setAuthor('Some Author');
+$writer->addStyle('SaoPaulo', 'FFFFFF', 'FF0000', true);
+$writer->addStyle('Flamengo', 'FF0000', '000000', false);
 $writer->writeSheet($data1,'Sheet1',$header);
 $writer->writeSheet($data2,'Sheet2');
 $writer->writeToFile('test.xlsx');
diff --git a/testbench/xlsxwriter.class.Test.php b/testbench/xlsxwriter.class.Test.php
index a84198c20..d9b25a494 100644
--- a/testbench/xlsxwriter.class.Test.php
+++ b/testbench/xlsxwriter.class.Test.php
@@ -77,6 +77,20 @@ public function testWriteToFile()
 		$this->assertEmpty($r2);
 	}
 
+	public function testCustomStyle()
+	{
+		$filename = tempnam("/tmp", "xlsx_writer");
+		$file_writer = new XLSXWriter_BuffererWriter($filename);
+
+        $xlsx_writer = new _XLSXWriter_();
+		$xlsx_writer->addStyle('test', 'FFFFFF', 'FFFFFF');
+        $xlsx_writer->writeCell($file_writer, 0, 0, '0123', 'test');
+        $file_writer->close();
+        $cell_xml = file_get_contents($filename);
+        $this->assertEquals('<c r="A1" s="7" t="s"><v>0</v></c>', $cell_xml);
+        @unlink($filename);
+    }
+
 	private function stripCellsFromSheetXML($sheet_xml)
 	{
 		$output=array();
diff --git a/xlsxwriter.class.php b/xlsxwriter.class.php
index 085e294a7..213abfc45 100644
--- a/xlsxwriter.class.php
+++ b/xlsxwriter.class.php
@@ -20,6 +20,10 @@ class XLSXWriter
 
 	protected $current_sheet = '';
 
+	protected $fonts = [];
+	protected $fills = [];
+	protected $styles = [];
+
 	public function __construct()
 	{
 		if(!ini_get('date.timezone'))
@@ -31,6 +35,21 @@ public function __construct()
 
 	public function setAuthor($author='') { $this->author=$author; }
 
+	public function addStyle(string $name, string $font_color, string $background_color, bool $bold = false): void {
+		$this->fonts[] = [
+			$font_color,
+			$bold
+		];
+		$this->fills[] = [
+			$background_color
+		];
+		$this->styles[$name] = [
+			count($this->fonts) + 5,
+			count($this->fills) + 3,
+			7 + count($this->styles),
+		];
+	}
+
 	public function __destruct()
 	{
 		if (!empty($this->temp_files)) {
@@ -279,7 +298,7 @@ protected function writeCell(XLSXWriter_BuffererWriter &$file, $row_number, $col
 			'blackheader' => 6
 		);
 		$cell = self::xlsCell($row_number, $column_number);
-		$s = isset($styles[$cell_format]) ? $styles[$cell_format] : '0';
+		$s = $styles[$cell_format] ?? $this->styles[$cell_format][2] ?? '0';
 
 		if (!is_scalar($value) || $value==='') { //objects, array, empty
 			$file->write('<c r="'.$cell.'" s="'.$s.'"/>');
@@ -314,17 +333,23 @@ protected function writeStylesXML()
 		$file->write(		'<numFmt formatCode="#,##0.00" numFmtId="168"/>');
 		$file->write(		'<numFmt formatCode="0.0000" numFmtId="169"/>');
 		$file->write('</numFmts>');
-		$file->write('<fonts count="5">');
+		$file->write('<fonts count="'. (5 + count($this->fonts)) . '">');
 		$file->write(		'<font><name val="Arial"/><charset val="1"/><family val="2"/><sz val="10"/></font>');
 		$file->write(		'<font><name val="Arial"/><family val="0"/><sz val="10"/></font>');
 		$file->write(		'<font><name val="Arial"/><family val="0"/><sz val="10"/></font>');
 		$file->write(		'<font><name val="Arial"/><family val="0"/><sz val="10"/></font>');
 		$file->write(		'<font><name val="Arial"/><b val="true"/><charset val="1"/><family val="2"/><sz val="10"/></font>');
+		foreach($this->fonts as [$color, $bold]) {
+			$file->write(		'<font><name val="Arial"/><b val="'. ($bold ? 'true' : 'false') . '"/><charset val="1"/><family val="2"/><sz val="10"/><color rgb="'. $color . '"/></font>');
+		}
 		$file->write('</fonts>');
-		$file->write('<fills count="3">');
+		$file->write('<fills count="'. (3 + count($this->fills)) .'">');
 		$file->write('		<fill><patternFill patternType="none"/></fill>');
 		$file->write('		<fill><patternFill patternType="gray125"/></fill>');
 		$file->write('		<fill><patternFill patternType="solid"><fgColor theme="0" tint="-0.249977111117893"/><bgColor rgb="FF003300"/></patternFill></fill>');
+		foreach($this->fills as [$color]) {
+			$file->write('		<fill><patternFill patternType="solid"><fgColor rgb="'. $color . '"/></patternFill></fill>');
+		}
 		$file->write('</fills>');
 		$file->write('<borders count="1"><border diagonalDown="false" diagonalUp="false"><left/><right/><top/><bottom/><diagonal/></border></borders>');
 		$file->write(	'<cellStyleXfs count="20">');
@@ -352,7 +377,7 @@ protected function writeStylesXML()
 		$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="42"/>');
 		$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="true" applyProtection="false" borderId="0" fillId="0" fontId="1" numFmtId="9"/>');
 		$file->write(	'</cellStyleXfs>');
-		$file->write(	'<cellXfs count="7">');
+		$file->write(	'<cellXfs count="'. (7 + count($this->styles)) . '">');
 		$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="164" xfId="0"/>');
 		$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="165" xfId="0"/>');
 		$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="166" xfId="0"/>');
@@ -360,6 +385,9 @@ protected function writeStylesXML()
 		$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="168" xfId="0"/>');
 		$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="0" fontId="0" numFmtId="169" xfId="0"/>');
 		$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="2" fontId="4" numFmtId="164" xfId="0"/>');
+		foreach($this->styles as [$font_id, $fill_id, $_]) {
+			$file->write(		'<xf applyAlignment="false" applyBorder="false" applyFont="false" applyProtection="false" borderId="0" fillId="'. ($fill_id - 1) . '" fontId="'. ($font_id - 1) .'" numFmtId="164" xfId="0"/>');
+		}
 		$file->write(	'</cellXfs>');
 		$file->write(	'<cellStyles count="6">');
 		$file->write(		'<cellStyle builtinId="0" customBuiltin="false" name="Normal" xfId="0"/>');