This is what I'm working on. It's my palette "squared". The squares outlined in dark pencil (hard to see, I know) are the colors straight from the tubes. They run in a diagonal from top left to bottom right. Each of the other squares is a saturated mix of the two colors which meet at that square.
It is taking a lot of time, but it is fascinating and wholly instructive. I put this partial up here, in anticipation of when the paper is full. It should be truly splendid. I consider this my medicine which will make me better. And, to be sure, it is the finest medicine I have ever taken.