@OPEN-KAPPA/COLORS
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    Variable ACHROMATOPSIA_MATRIXConst

    ACHROMATOPSIA_MATRIX: readonly [
        0.2126,
        0.7152,
        0.0722,
        0.2126,
        0.7152,
        0.0722,
        0.2126,
        0.7152,
        0.0722,
    ] = ...

    Standard Rec.709 Luminance