We just changed some of our interior lights.
We already had the main lights on the ceiling on white LEDs... they are great.
But there were also the smaller "reading" lights on the side and between the 2 seats in the front. These lights had old style bulbs and barely generated any useful light.
So, I switched the bulbs between the 2 seats to white LED (650 lumens I believe), and covered one of them with a red filter. This gives us the option to have white light and see maps and other things in the dark. But, when driving, this is way to bright and it would ruin night vision. That is why we also have the red light option with the filter. This is still bright enough to read things, but you keep your night vision while driving.
In the rear, I replaced the small standard bulbs with dedicated red lights (I think 150 lumens each). This is for when you want to keep your night vision and walk out and look at the stars, for example. Also for when you get up in the middle of the night for a bathroom visit.