https://mods.factorio.com/mod/lamps-are-white-by-default


That is 100% absolutely a possibility, but trying to play as vanilla as possible.
Just a simple "default lamp colour" option in interfaces would be fantastic, instead of manually setting so you can have a colour scheme that acts like your ...

I don't place lights for the ambiance or appearance or because they look nice etc etc, I have placed them, every single one of them, for clarity of vision in the dark

If it's just about the vision, did you consider using the Nightvision equipment module instead of lamps?

I don't have a single ...

I hate this change, even if it was a bug.

Played for a while in space-age just considering that this was the original colour and I was misremembering but decided today to figure out if there is a way to default it to pure-white because the off-white colour is stupid when lights are used for vision ...