No need to hurry, Nathan.

Just an idea (and you therefor can abandon it of course):
There once was a Pepsi Concorde
http://forums.klipsch.com/forums/storage/9/382723/Concorde%20pepsi.jpg
(which couldn't go very fast, because the darker color produced too much heat in supersonic travel)
Maybe this could be an idea of a future paint. Doesn't have to be the 707, a 727 freighter might look good too.

But I don't think you are lacking of good ideas on your paints.