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The deuteranopia is very slightly more orange in some squares.

The visibility probably depends a lot on your display color calibration and how fil spectrum your ambient light is. Incandescent "soft white" and modern imitations, common in household lighting, is usually yellow/orange.

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I overlayed them in Gimp as layers and did A/B comparison with other people and neither could detect a change.

Thanks for doing the "obscure science"! Perhaps it was variations in my lighting or optical illusion effects.

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