Would it work to do something like transparent green on the bottom instead of the transparent yellow? Or dark green trim instead of the dark red trim around the transparent yellow on the bottom? I am only trying to keep as much of the interior wood work visible as I can, because it is such a beautiful kit, if I don't screw it up too badly. I first thought about green trim on the bottom and red on the top, but then thought it might be a bit too much (look like a stop light). On my Alpha, I put multicolored stripes on the top and checkered colors on the bottom, and it really helps me to see it, besides being a big plane (but no transparent covering needed or wanted). I'm also thinking of making the shapes really more different on the top than the bottom, but I know that color differentiation is much easier to see than anything else. I suppose a simple solution would be to run a couple of stripes (red?) right in the middle of the lower wing so as not to spoil the appearance of the upper wing, but I really don't want to do that if I don't have to. How do the big Sig Kadet flyers differentiate their top and bottom views, or any other big trainers for that matter?