Black bars aren't "black" (1 Viewer)

[bazzz]

TV-Server Version:
MediaPortal Version: 1.0.0.3
MediaPortal Skin: BlueTwo Wide (modified)
Windows Version: XP Pro SP3
CPU Type: E3110 3 GHz
HDD: WD SE16 500 GB, Samsung SpinPoint 750 GB
Memory: 4 GB OCZ Platinum DDR800
Motherboard: Gigabyte GA-P35-D3SL
Video Card: Asus EN8600GT Silent
Video Card Driver:
Sound Card: Onboard Realtek HD
Sound Card AC3: Coaxial out
Sound Card Driver:
1. TV Card: Hauppauge PVR-150
1. TV Card Type: analog
1. TV Card Driver:
2. TV Card:
2. TV Card Type:
2. TV Card Driver:
3. TV Card:
3. TV Card Type:
3. TV Card Driver:
4. TV Card:
4. TV Card Type:
4. TV Card Driver:
MPEG2 Video Codec: Nvidia Purevideo
MPEG2 Audio Codec: S/PDIF
h.264 Video Codec: MPC-HC
Satelite/CableTV Provider: Shaw Digital
HTPC Case: Silverstone Lascala LC17S
Cooling: Scythe Mini Ninja with 120mm Nexus fan. 2x 80mm Nexus case fans
Power Supply: Corsair VX450
Remote: Hauppauge 45 button remote
TV: Toshiba Rezga 32" LCD
TV - HTPC Connection: DVI-D -> HDMI

When I'm watching videos that aren't the same aspect ratio as my screen (16:9), MP adds black bars either vertically or horizontally to make up the screen size. This is fine. However, it seems that the colour of the bars being added is not pure black, but rather "dark grey". This becomes most noticeable if watching with the lights turned low, when black sections in the video look darker than the surround. Does anyone have any ideas how I could go about correcting this?

 

[uncertainty]

I fixed mine by configuing my nvidia driver to use 0-255 colors instead of 16-255. You can find this setting in your nividia control panel under the video section. You must have a fairly recent nvidia driver or this option will not be available to adjust.