Some observers see red in front of blue, while others see blue in front of red. (chromostereopsis)pic.twitter.com/FTNqQWxkly
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No idea! I'm an architect, so I was brought up on aspects of colour theory such as red comes forward and blue goes back. I just think the opposite and it seems to happen! Although I suspect the amount of chroma / brightness of the two might have something to do with it
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