A rectangle of nice, restful, healthy, vibrant green below and sky blue above, in the upper half -- just the thing to celebrate the vernal equinox. Then, a set of finely thin-ribboned, parallel bars in pure white, sunshine yellow, and rich cream, arranged in the lazy X of a saltire, ranging from corner to corner, and intersecting in the center. Then, on this center spot, a large apple-red sphere, not unlike an actual apple, silhouetted, and sporting wavering rays of varying lengths.
Finally, within the large center spot, the stark white of a rippling strait jacket, with the hard red of a slashing bar through it, from upper left to lower right -- the clear international symbol for NO.
And there you have it -- the start of a new nation, Terra Sanitas: The Land of the Sane. Small details remain, of course, which include -- well, if you want to get picky about it -- everything else, except the flag part.