Are marine instrument displays too bright?

My experience has been with old Raytheon and Furuno CRT radars, a monochrome CRT video sounder, all of which needed colored overlays to tone them down.

Apelco LCD Loran plotter (yeah, they shut the system down, boo hiss) with two illumination levels, needed overlay on screen and going inside to cover the lights illuminating the touchpad.

Apelco LCD radar, three light levels, way too bright and no inverse video. Also a POS radar but that's another subject.

JRC LCD radar, ten light levels plus inverse video (light target on dark field). Still wanted a red overlay on the screen. Buttons were lit by fixed-brightness LEDs, had to go inside and add resistors in line to mute them.

Garmin GPSmap 76 handheld monochrome LCD GPS - one light level, quite dim. Not too bad.

PC with Fugawi charting software - Fugawi has an alternate palette for night use that cuts direct illumination very nicely. Still a lot of off-axis light coming from the screen but that's not Fugawi's fault a

Gents, I've been intimately familiar (on one notable occasion more familiar than the factory repair center) with every piece of gear I've ever used, and as you can see I've physically modified some of it. I'm not asking for advice but rather for a broad overview of experience as to whether the factory-provided dimming facilities are sufficient for night running, because in my somewhat limited experience they are not. On my own cruising sloop and on other vessels I've had to modify or adapt or both to get the light levels down to where they do not disturb my night vision, with both CRT and LCD displays, and a friend of mine with rather wider experience reports the same. As I said, when the two of us went aboard a strange boat we carried sheets of colored film in the expectation of having to use it.

I've seen boats driving around at night with big color video sounders or whatnot running at brightnesses that terrify me because I know that the operator can't