To;dr: traditional sRGB displays have a narrow color gamut, the new displays have a much better gamut, with brighter reds and greens. A new color API uses Lab and LCh color spaces, better suited to human vision, allow interesting ways to express and manipulate color, including the newly available. Chromium has some support, if you have the right screen (I don't). The API is backwards compatible to sRGB screens. Many small demos.