I'd like to hop on this thread also to discuss the issue. I have a Monolog 70 and plan to put it together this winter. I took it out and looked at it. The top color scheme is pink silver and red. The bottom is just silver and pink without the red. With the red on top, it makes the top slightly darker than the bottom.

Now I've always heard, lighter on top and darker on bottom. So the wings are a tad backwards on the monolog. Also, the bottom has random silver stars on the pink. That's more a top-of-the-wing pattern. Usually bottoms just have simple geometric sahpes like stripes are high-contrast black and white panels.

I always try to discern the orientation of my plane by continuity of motion as color can let you down sometimes. Like against a hazy sky your whole plane can be a black silhouette. But I still think a color scheme design for visual acuity is a good idea. You never know when you could get confused trying something new and if the color scheme helps bail you out when you @#$% up, great.

I'm seriously thinking about taking some dark color monocoat, black or blue, and putting a few stripes on the bottom of the wings. I'm not sure how I'd orient them yet, maybe front to back like invasion stripes but further outboard. Also not sure if I'll maiden the plane first and then only put them on if I find myself needing them after flying it a bit. But something dark in spots on the bottom is going to remain a serious consideration as I think about how I'm going to built the plane.

Still not sure why they put a color scheme like the top of a wing on the bottom of the Monolog wing. Most planes use something high contrast like black and white.

Maybe take a look at the color schemes on several aerobatic planes and then modify the wing bottoms on your Monolog?

-l2t