What does the color indicate about the strength of the acid or base?

Chemists use the Universal Indicator to identity acids and bases, as follows:

Strong acids: Red: 1, 2, 3.

Weak acids: Orange: 4, 5.

Neutral acids: Yellow, 6, 7. Green: 8. Blue: 9, 10. (blue is already weak base.

Weak base: Purple: 11, 12, 13, 14. (Last two are Strong base).

i'm guessing this is from edg enuity so the answers would be, from top to bottom,

theodor schwann

matthias schleiden

robert hooke

rudolph virchow

anton van leeuwenhoek