What does this rabbit joke mean? What is the answer?

After hearing your question, she will say: white! "

You said, "No!"

She said, "Gray?"

You said, "It's not true!"

She said, "Black?"

You said, "Not yet!"

She said, "What color is that?"

You said, "Do you want to know?"

She said, "Yes!"

You said, "Really?"

She said, "Yes!"

You said, "Then you have to make me happy ~"

It seems so. I found it too. . .

Such an evil joke ~ ~ ~ embarrassing