I was pondering the presence of the color red in the AT-AT's canopy glass a few moments ago, and while I know that the logical thing to do about it is to remove the red (as Adywan has done), I couldn't help but explore a curiousity I had about an alternate take on the AT-AT's cockpit...
Basically, the idea here is that for some reason all of the lights inside the AT AT cockpit are red, so I tinted everything red in color balance mode. I kept a bit of natural color in the highlights since there is natural light coming in through the canopy glass, which is a non-red light source. Again, the smart thing to do is probably just to remove the red from the exterior shots (especially since a screen full of red is likely to clash with the cool blues of all the other shots), but I had to satisfy my curiosity.