Theme
The console ships in a single dark "console" theme, tuned for operator work — there is no theme switcher. (An earlier build had a Light/Dark/Auto toggle; it was retired in favor of one consistently-designed dark theme across the app, docs, and site.)
The clock in the top bar shows your local time and zone — useful when reading timestamps in Live Traffic against your own wall clock.
How it's wired
CSS variables on <html> (theme-dark). Every color in the SPA references those variables — see ui-v2/src/index.css for the definitions.