Incorrect, it either lies on the blue side or the green side, you must choose. Neither is not an option.

I chose to close the tab.

Sometimes the answer can be “I reject the premise.”

I’m sure you’ve had conversations where that’s the answer you want to give.

If you gave me the exact same color code 20 times I might give you green 10 times and blue the other 10 because I genuinely can't tell the difference. So it's not a binary like you're claiming.