Random Riddle: 9-17-2016

In my physical manifestation, my figure is of a neutral hue.
As a calculation, one of me is almost certainly less than half of you.

On your face, I am motionless and mute.
To describe the cold, I am complete and absolute.

Of proximity, I am always of a close pitch.
For punishment, I taunt you even after I’ve put you in your ditch.

What am I?
 

Riddle