Great animation. One additional point is to keep the top and bottom patterns drasticaly different. I always use alternating bars of colors on the bottom of the wing and then something good looking on the top.

Now, on a cloudy day, unless you have flasing strobe lights, at some point, the plane becomes a silhouette and you will have trouble determining direction and orentation. This is a real issue for me and I now will not fly on a cloudy day. I've crashed to many gettting lost. If you keep the planes close in and low, it isn't as bad a problem, but I fly a 4*60 and it require some real estate to keep the three mistakes high in force. The guys with the small electrics keep them in close enough that they stay visiable.

We have another thing besides fog and clouds to consider at our field. The pervaling winds are roughly west to east and they really pick up after mid morning, so we usually quit flying by about 10;30. This time of the year, the sun isn't very high at 8 or 9 and when coming in for a landing, you have a very bright sky as a back drop and your plane again goes silhouette, reguardless of the color scheme.

Don