How do we understand a painted olive?

How do we understand a painted olive?

When the olive is handled, it should be full of delicate flesh and there should be no damage to the grain structure. Best Olives
When olive is squeezed, it should not leave a purple or bluish color on the finger.
The olive seeds should not be too overly black. Quality Olives
When eaten should not leave a sour taste in the throat.
The color of the olives should not be too black. Buy Olives
It can be understood whether dyeing is done easily by looking at the dye release from these hands.