I have a question or three on how the alignment changes you get for killing fighters is determined.

When dealing with corporate fighters, how is the positive or negative alignment figured? Is it based on the alignment of the person doing the killing versus the corp that owns the fighter being killed? Is it based on corp vs corp alignment? Is it merely the overall red or blue status of the corps or how far red/blue they are?

I am currently in a game with all but one of the 4-5 corps (including mine) are blue. It makes trading a tricky proposition if I want to keep myself blue, but the other corps seem to hit our fighters with impunity and don't seem to suffer major alignment loss.

Is that because their overall corp alignment is much larger than ours? Do they even get a hit since we are both blue but they are "more" blue than we are?

Check out tw-cabal.com, Traitor has the formulas for that all laid out for you. Also, please note that the formulas are different for MBBS and Classic games. If you haven't already been there, spend some time reading through it, its an amazing resource with tons of tactics, tips, tricks, and formulas.