I read https://moultano.wordpress.com/2026/06/19/where-to-find-the-colors-your-screen-cant-show-you/ last week and despite some muddiness around “color” as measurable stimulus vs “color” as subjective experience, I really enjoyed it. It got me thinking about adding primaries. Today I learned: people are on the case: https://en.ubiresearchnet.com/multi-primary-color-display-technology-2026/