maybe so, but telling you what HUE i use levels the playing field? 
What are the icons for if not to aid in SA? Identifying friend from foe, plane types, relative speed, coming vs going, yada, yada, yada.
Since we don't all see color the same, and since we're not all using identical equipment, having everyone use the same color icons
could give someone an unfair advantage...
Tweaking how you see what is shown to you already so that you can easily and quickly understand it sure doesn't seem a problem to me, especially since the option isn't withheld from anyone. How about adjusting the size of the icons themselves? Does the fact that I make mine smaller give someone else an unfair advantage over me? Could I use that as a legitimate excuse if I got beat?
Could you imagine the unfair advantage I'd have if I was able to tweak any old view I wanted to optimize it? What if I could shift my head left/right, up/down, forward/back and actually SAVE it that way? How cheesy would that be? What if I could adjust the brightness or contrast of my monitor? Eeegads!
MtnMan