Are you colorblind?

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What do you see? I found Dad's old chemistry book and I remember as kids we always were fascinated by this colorblind test. Do you see onion or color? If you see color you are red/green colorblind, if you don't see anything you are pastel colorblind. I see onion first so I am not colorblind, unlike most of my family!

Also, too bad I didn't point out to Dad his bad grade on his chemistry test when I wasn't doing too well in Science.