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Austin sometimes does not realize people fly jets i assume since he is a avid small plane flyer. Maybe take a picture and email him back say.... Austin.. please understand they are not always grey. Sometimes technically yes... but in cirtin light they needs to look more white on XPlane to mimic real life.
You are wasting your time, Austin does not understand the logic behind the colors of the contrails. I have screenshots of an incredible discussion with him and obviously he's missing a big point.
I read somewhere that the developers are working on a new particle engine that will enhance everything related to clouds, smoke, fume,... Wait and see.
When I showed this amazing development for FSX https://www.youtube.com/watch?v=-Jb9VfzwWFk on this portal, the answer was something like: '"small team, not a priority".
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