I've seen 2 RV8's with Mazda Rotary engines in them. They sound like bumble bees when they fly over.

I like #4 , but with the colors reversed. The white should be on top and the red on the bottom, just to make the plane more visible. If someone is looking for you from above, it's easier to spot a white plane against the green and brown ground. Looking up for traffic, it's easier to spot a dark colo...