Back in late 1970s/early 1980s, Scandinavian countries mandated the use of/access to, amber crts for workers.
Maybe the white phosphorous had skewed towards the blue too much?
I never knew that. I sold computers in the early to mid-80’s, while working my way through college, and I certainly remember the amber CRTs. I just thought they were created primarily for marketing purposes, to differentiate from the ubiquitous green CRTs.
Off-topic: My favorite era in the computer industry was the late 70s to early 80s (pre-IBM PC). Once IBM took over, everything became commoditized, which admittedly was probably necessary for the future growth of the industry. However, I miss that early innovation, and the variety of machines it produced. I especially loved the Apple II, and was a big fan of Atari’s machines, from the 8 bit line to the 16/32 bit ST and the full 32 bit Falcon 030. What was so exciting was discovering all of the hidden capabilities of those machines, and seeing how talented programmers could make them do amazing things that no one expected. Every new machine was a treasure trove waiting to be explored.
All of that ended with IBM’s domination, though Apple continued to innovate in a less “wild west”, more corporate manner, at least for a while. The computing capabilities we all have at our fingertips today are astronomically beyond those of the early systems, yet it all now seems so boring in a way. We never see new, paradigm-shifting capabilities introduced, just annual bumps in speed and memory.