How to use Deep Color with HD Graphics 4000

Hello,

I've created a photography workstation with the following:

-DQ77KB

-i7-3770S

-NEC MultiSync PA241W

For graphics, I'm using the integrated HD Graphics 4000 in the CPU, and am using a Display Port cable.  Everything claims to support deep color, but the display drivers only indicate True Color is available (24-bit color depth).  How can I enable deep color with HD Graphics 4000?

The following indicates that deep color is supported by HD Graphics 4000:

http://software.intel.com/en-us/node/182971

NEC Monitor information specifying deep color support with Display Port connection:

[http://www.necdisplay.com/documents/ColorBrochures/PA241W.271W.301W_SpecBrochure.pdf | http://www.necdisplay.com/documents/ColorBrochures/PA241W.271W.301W_SpecBrochure.pdf]

I am using Windows 8 Pro x64 with 8GB RAM, and have specified in the BIOS to use 1 GB RAM as graphics memory.  I do have all the latest graphics drivers and firmware.

Thanks,

-Ryan