fats:
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I do think your friend will have easier time once he learns icons for each plane type. That is '190' prolly isn't a friendly though he might not be able to tell the color ( no idea how color blindness works ). When a plane type icon isn't showing I guess he is out of luck for the moment.
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For me, the problem isn't so much telling the red icons from the green ones (the green ones look yellow to me), but it's *reading* the red ones at all. Not only against the green ground, when they're almost impossible to read, but against the blue sky as well, where the red text and the blue sky seem to blur into each other.
And I can see the enemy 'dots' at a distance, but when the dot goes from one pixel to to two or more, it effectively dissapears for me, until it gets really close. So I have to watch the text, instead of the plane, and the text is very, very hard to read.
In AW, the only color combination I could use was green for one enemy country, yellow for the other (both of these looked yellow to me), and white for the country I was on.
anRky