pink
It depends on the pH of the base, but the juice will turn some sort of greenish yellow.
Red cabbage juice acts as an indicator - it can detect the presence of acids or bases. Certain compounds in the cabbage juice react when in the presence of an acid or base, and change color...
There is no such thing as purple cabbage juice because red cabbage juice is actually already purple, its just called red cabbage jucie.
no, purple cabbage juice is alkali. (ph of about 13).