/**
* Write color table
*
* @return string
*/
private function writeColorTable()
{
$content = '';
$content .= '{';
$content .= '\\colortbl;';
foreach ($this->colorTable as $color) {
list($red, $green, $blue) = Converter::htmlToRgb($color);
$content .= "\\red{$red}\\green{$green}\\blue{$blue};";
}
$content .= '}';
$content .= PHP_EOL;
return $content;
}