What does 'cold' mean? What does 'warm' mean?

Zufan, You are  right! So much for my editing skills.

The first sentence should have read "Cold = decrease.......". 

But the good part of this is I now know at least one person was reading my post. :-)

Cold = Increase in upper bass/lower mid range frequencies. Mid range and high frequencies can seem to be emphasized, seen by some as an increase in transparency/detail. 

Warm = increase in upper bass/lower mid range frequencies.  Tends to diminish mid-range  seen by some as a loss of some transparency.