For night vision some of the lights should be red. Many marine fixture have red and white bulbs. On the eagle all areas and rooms have red and white bulbs. The ceiling is wired with 12 volt dc. However some of the fixtures are AC domestic with 12 volt bulbs.
The 120 volt AC wire is run thru the walls, so the 120 are hanging or wall mounted accent mood lighting. Easy to remember ceiling is 12 volt, side wall is 120 volt. Its the bulb that's important, not the fixture.