Your mind maybe playing tricks on you!

[Stan Hillis]

So, your mind isn't tricking you (because you think a Coke can should be red), your eyes are.

I can buy that.

[Andy]

Originally Posted by Stan Hillis

So, your mind isn't tricking you (because you think a Coke can should be red), your eyes are.

I can buy that.

There is no trick. The flood of cyan and the relatively sparse area of no color makes you see the complimentary color due to lateral inhibition. If that cyan was all Red you'd see cyan in the coke can. Sometimes physics explains more than we able to believe.