There isn’t one. Investing your energy into looking for the fourth primary colour is pointless.
The values and principles upon which we have built our life are different than primary colours. Because you probably didn’t sit down when you were 11 (or 21) and list out the core values and principles upon which you would design your life first, to articulate them now involves working backward. That means careful reflection, and trial and error. You might discover tomorrow that what feels like a principle of your life today actually has something else even more basic beneath it. To further complicate things, values can change.
Some quests (drilling down to the heart of what matters to you) are far more likely to yield results than others (looking for something that isn’t there.) Knowing the difference will save a lot of time.
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