This is new for me, but so far I find that is is helpful to support intuitive formulating of pools of color. These pools can then be easily moved in either the cooler or warmer, lighter or darker, more or less intense direction. Since these pools are available for addition and modification throughout the life of the painting process, this leads to the use of fantastic nuances of harmonious colors.
This works with Golden OPEN paints in that they stay workable on the pallet for weeks or months, if the pallet is kept in an air tight container when not in use, and gently sprayed with thinner before closing the container for storage. This is good for doing a painting that will span a period of weeks or a a month or so, and have the same mixtures of paint available for use in tuning and evolving the painting.
The first painting that I have done using this technique was a good one to test the color pools in that it is based on many shades of red and green. The painting is called Sheep Shapes Two. The following is the current version of the painting, subjet to further modification!