Your browser does not seem to support JavaScript. As a result, your viewing experience will be diminished, and you have been placed in read-only mode.
Please download a browser that supports JavaScript, or enable it if it's disabled (i.e. NoScript).
I don't think those knobs are backlit in the real aircraft.
@x4569 found a night cockpit video here, the resolution is not that good, bit it's clearly visible that the CDU knobs are really dark.
@Randolf good catch, really seems like that, however, unclear why done like that. Maybe because the screens above the knobs may spend enough light? Interesting. Thanks!