@chrisphin unfortunately, display profiles kind of ruin the effect
(explainer: the image is being interpreted as sRGB, and since my display has a wider gamut than sRGB, and the rendering stack is built around the assumption that each pixel represents an atomic color sample, the "pure" red, green, and blue pixels encoded in the file are having some of the other primaries mixed in to bring them closer to the sRGB primaries, resulting in some subpixels getting activated when they aren't meant to)
@sjolsen Fascinating!