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.
RGB color implementation

\Zend_Pdf_Element_Numeric
$_b= ''
Blue level.
0.0 (zero concentration) - 1.0 (maximum concentration)

\Zend_Pdf_Element_Numeric
$_g= ''
Green level.
0.0 (zero concentration) - 1.0 (maximum concentration)