SO, as I investigated the much recommended modern master painter, Richard Schmid and his fabulous book 'Alla Prima' I decided to follow his suggestion and painted the color charts using his choice of pigments...11 of them. On 12 pieces of canvas, you end up with 660 different tints of color...over a 5 step value plan.
Both brains had a ball...the left keeping me organized so i would mix the right pigments in the right order...the right having as much fun as a kid in a candy store marveling over all the 'preddy kolors'. Finished all 13 in 3 days...now that is an example of left brain obsession!
BUT, let's TAKE IT UP A NOTCH...BAM! I (or probably my left brain) didn't want the fun to stop, so I started over with Ann Templeton's 16 pigments...17 sheets, 1360 color tints.
The absolute beauty of these colors is that they are all mixed with pure pigment...only 2 pigments (different colors) and white. Clean, Fresh, Exciting!
Worked on these one day in an art group I go to, and was told by a couple artists that I was wasting my time. Of course, Richard Schmid's paintings are in major museums and collections, and he does these periodically himself.
Ultimately you will learn how to mix these without your cheat sheets, but in the meantime they are a wonderful tool.