Do the Splits!
Now that you have been thoroughly entertained. I just found another technical palette discussion, this one by Larry Seiler. It discusses execution of a “Split Complementary Palette”. It uses only 4 colors.
Of course, that was technical, so how about a big ass palette… like Karen Jurick’s Palette. Or how about Paul Cumes’ Palette. Just try painting outdoors with these numbers, and you will realize that the die-hard hike it in and hike it out plein air painter has a limited palette by necessity.