diff -r 000000000000 -r 4eba9c11703f web/Zend/Pdf/Color/GrayScale.php
--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/web/Zend/Pdf/Color/GrayScale.php	Mon Dec 13 18:29:26 2010 +0100
@@ -0,0 +1,84 @@
+<?php
+/**
+ * Zend Framework
+ *
+ * LICENSE
+ *
+ * This source file is subject to the new BSD license that is bundled
+ * with this package in the file LICENSE.txt.
+ * It is also available through the world-wide-web at this URL:
+ * http://framework.zend.com/license/new-bsd
+ * If you did not receive a copy of the license and are unable to
+ * obtain it through the world-wide-web, please send an email
+ * to license@zend.com so we can send you a copy immediately.
+ *
+ * @category   Zend
+ * @package    Zend_Pdf
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ * @version    $Id: GrayScale.php 20096 2010-01-06 02:05:09Z bkarwin $
+ */
+
+
+/** Internally used classes */
+require_once 'Zend/Pdf/Element/Numeric.php';
+
+
+/** Zend_Pdf_Color */
+require_once 'Zend/Pdf/Color.php';
+
+/**
+ * GrayScale color implementation
+ *
+ * @category   Zend
+ * @package    Zend_Pdf
+ * @copyright  Copyright (c) 2005-2010 Zend Technologies USA Inc. (http://www.zend.com)
+ * @license    http://framework.zend.com/license/new-bsd     New BSD License
+ */
+class Zend_Pdf_Color_GrayScale extends Zend_Pdf_Color
+{
+    /**
+     * GrayLevel.
+     * 0.0 (black) - 1.0 (white)
+     *
+     * @var Zend_Pdf_Element_Numeric
+     */
+    private $_grayLevel;
+
+    /**
+     * Object constructor
+     *
+     * @param float $grayLevel
+     */
+    public function __construct($grayLevel)
+    {
+        if ($grayLevel < 0) { $grayLevel = 0; }
+        if ($grayLevel > 1) { $grayLevel = 1; }
+
+        $this->_grayLevel = new Zend_Pdf_Element_Numeric($grayLevel);
+    }
+
+    /**
+     * Instructions, which can be directly inserted into content stream
+     * to switch color.
+     * Color set instructions differ for stroking and nonstroking operations.
+     *
+     * @param boolean $stroking
+     * @return string
+     */
+    public function instructions($stroking)
+    {
+        return $this->_grayLevel->toString() . ($stroking? " G\n" : " g\n");
+    }
+
+    /**
+     * Get color components (color space dependent)
+     *
+     * @return array
+     */
+    public function getComponents()
+    {
+        return array($this->_grayLevel->value);
+    }
+}
+