The NVG/Nightbird compatible Tornados all have green warning/operation lights for the majority of direct vision components, low intensity Centralised Warning Panels and black painted canopy rails to reduce glare when using goggles. As the last two posters have said, it is all shades of green.
The Displays and TV Tabs have settings of Night, Day and Auto, which does exactly as it says on the tin. These only control brightness settings however, and are not NVG specific.
S'cuse me if I'm being Captain Obvious 