Hello!
I was wondering which part of the gradient is primary and which one is secondary. Now that I get the point I make you benefit from this little tip ^^
So when you put a Tori stand erect with the right arm up and the left arm down:
- The Primary Gradient is always above the secondary
- The Secondary Gradient is always below the primary
- Feet and left arm's extremities are Secondary Gradient
- Right arm's extremity is Primary Gradient

Example...
Here:

- The Primary Gradient is Chronos
- The Secondary Gradient is Radioactive