Alright, so I'm gonna split my response into two.
You'll see why in a bit. And curse me for it later.
>>6134428Well, you mentioned how Jedi and the Republic were associated with deep red and white, right? I figure the Triumvirate would keep the red, but go a bit more maroon, and replace some of the white with black, to signify the death of what was, and have the little bit of white remaining signify what they hope will be again someday, as shown by this Y-Wing.