PN58C550 - Color Space, HDMI Black Level adjustments

I'd like some confirmation on these settings. I am doing an initial color calibration with a Spears & Munsil Blu-ray with my Oppo Blu-ray player. I also have my XBOX360 and PS3 set to Full Range RGB, but not sure if this is correct.

What is the difference between Auto/Native color space? Does "Auto" represent video levels (Rec.701) and "Native" similar to Deep Color?

Black Level gives options (Normal/Low). How does that correspond to (16-235) and (0-255) on this tv?

Reply 1 : PN58C550 - Color Space, HDMI Black Level adjustments

Hi, can anyone answer my questions? I would like to try and do a proper calibration soon. Thanks.