@boy
yes I can see very slight red - it is espcially clear in the affinity photo zoom because it is designed for photo editing in a way xara is not - both these screenshots are of the exact same file at the exact same pixel size
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like I said this is artifact, it has nothing at all to do with the illusion, which is dependent on how the brain filters and decodes the colour frequencies it receives
so I was wrong to say there were not there in the affinity photo zoom, sorry... they are scant is all I can say in feeble excuse, and as far as I can tell only present near the green which would make sense as artifacts, the rest of the bars seem clear as day