I just really needed to do this at this time. Add the 3 primaries and we have 12 colors total. I'm almost ready to tube these, but before I do so I need to mix a little more paint to top off my tube efficiently. I'm mixing for 15 ml tubes each, my 3x deep violets on the right are a very good ratio mix, and volume to fill one tube each. The other colors need more volume to fill a tube, and my yellow green needs to be adjusted to make a little more green.
While I'm mixing I am aware of and sensitive to value relationships with each of the 12 colors. Once this process is completed, while painting I can arrive at any color that I need very quickly. I've applied saran wrap to keep my paint fresh until ready for tubing a little later today.
Edited; replaced the previous photo, now shown including the tubes for reference.