True Dark Mode dims and recolours every compatible DNR product at once, for night stints and dark rooms, so you are not blinded at 3am and not squinting at a dim screen in the day.

It has its own page in the plugin, marked with a moon icon. What it covers:

• Settings. Turn Dark Mode on or off for DNR dashboards, DNR devices and DNR RPMs independently. Dark Mode Native follows the game's own day and night state, which is supported in ACC and Automobilista 2 only.
• Colours. A Dark Mode colour applied to all compatible DNR profiles, with a choice of Red, Blue, Purple or Orange, or Custom with your own main and alternative colours.
• Brightness. Separate dimming levels for dashboards, DNR devices and DNR RPMs, so your LEDs can drop further than your screen.
• Third party. A True Dark Mode behaviour for the Lovely Dashboard.
• Hotkeys. Toggle Dark Mode, next and previous Dark Mode colour, and next and previous preset, so you can switch as the sun goes down without leaving the car.

Because it is a universal setting, Dark Mode colours are configured here rather than on each device page, and the individual dashboards point you at this page for their Dark Mode options.