It just came to my head, like this small question.

I for one think the Positive feedback tastes like green apple.

the different poles of a battery

Green = Apple pie.
Red = Spicy cherry.

I think it green would be tart/sour like a green apple, and red would be slightly bitter, like dark chocolate

Like everyone else is saying, the green one definitely like a green apple lollipop. One of those square ones too.
I think the red one doesn't taste like anything but more like a slap offside the head.
And the grey one kinda tastes like really medicore food you don't want to eat, but have to to not waste food.

Positive is lime flavored. Negative tastes like blood. Neutral tastes like bran muffin.

Positive = lime
Negative = extra hot chili

Positive: Mint
Neutral: Oatmeal
Negative: Cayenne Pepper

Salty, like the sweet, sweet tears of happiness and sadness. I mean, candy. Totally candy, not that other stuff. Red hots and peppermint chocolate. Taste the rainbow! We need vote-blue and vote-yellow buttons, too!

Seriously though, I have never really thought about it. Just replied after seeing this topic for almost a week. I don't actually have a serious answer right now.

The green bar maybe tastes like lemonade, while the red bar tastes like these tube candy thingies , would explain why some folks are so keen on getting the red ones

As for the neutral, maybe it tastes like an aluminum spoon.

Can confirm
Green = Apple
Neutral = Raisin Bran
Red = Cinnamon

alphamule said:
Salty, like the sweet, sweet tears of happiness and sadness. I mean, candy. Totally candy, not that other stuff. Red hots and peppermint chocolate. Taste the rainbow! We need vote-blue and vote-yellow buttons, too!

Seriously though, I have never really thought about it. Just replied after seeing this topic for almost a week. I don't actually have a serious answer right now.

And yet your answer was excellent. :-)